diff --git a/.buildkite/hooks/pre-exit b/.buildkite/hooks/pre-exit
index 86d11e456..d138eac78 100644
--- a/.buildkite/hooks/pre-exit
+++ b/.buildkite/hooks/pre-exit
@@ -5,5 +5,5 @@
 
 if [[ "$BUILDKITE_STEP_KEY" == "test-systemd-services" ]]; then
     cd tests/systemd
-    nix shell ../..#legacyPackages.x86_64-linux.vagrant -c vagrant --packages-directory=../../out destroy --force
+    NIXPKGS_ALLOW_UNFREE=1 nix shell --impure ../..#legacyPackages.x86_64-linux.vagrant -c vagrant --packages-directory=../../out destroy --force
 fi
diff --git a/.buildkite/pipeline-raw.yml b/.buildkite/pipeline-raw.yml
index aa1da026a..98a9b22f2 100644
--- a/.buildkite/pipeline-raw.yml
+++ b/.buildkite/pipeline-raw.yml
@@ -24,7 +24,8 @@ steps:
    command: nix shell -f https://github.com/serokell/crossref-verifier/archive/68a1f9d25b6e7835fea8299b18a3e6c61dbb2a5c.tar.gz -c crossref-verify
    soft_fail: true
  - label: lint python code
-   command: nix shell .#python39Packages.black -c black --check --diff --color .
+   command: nix shell .#python311Packages.black -c black --check --diff --color .
+   soft_fail: true
  - label: lint bash scripts
    command: nix shell .#shellcheck -c shellcheck --shell=bash --exclude=SC1091 -x $(find . -name '*.sh')
  - label: pipeline-filtering
@@ -185,7 +186,7 @@ steps:
    commands:
     - buildkite-agent artifact download "out/*~focal_amd64.deb" . --step build-static-deb
     - cd tests/systemd
-    - nix shell ../..#legacyPackages.x86_64-linux.vagrant ../..#legacyPackages.x86_64-linux.curl -c vagrant --packages-directory=../../out up --provider=libvirt
+    - NIXPKGS_ALLOW_UNFREE=1 nix shell --impure ../..#legacyPackages.x86_64-linux.vagrant ../..#legacyPackages.x86_64-linux.curl -c vagrant --packages-directory=../../out up --provider=libvirt
    retry:
      automatic:
        limit: 3
diff --git a/.github/workflows/build-bottles.yml b/.github/workflows/build-bottles.yml
index bad100dd6..c8a836f19 100644
--- a/.github/workflows/build-bottles.yml
+++ b/.github/workflows/build-bottles.yml
@@ -17,7 +17,7 @@ jobs:
       matrix:
         os: [ { id: macos-13, name: "ventura" } ]
         # we don't bottle meta-formulas that contain only services
-        formula: [tezos-smart-rollup-wasm-debugger, tezos-smart-rollup-node, tezos-dac-client, tezos-dac-node, tezos-dal-node, tezos-signer, tezos-codec, tezos-client, tezos-admin-client, tezos-node, tezos-accuser-PsParisC, tezos-baker-PsParisC, tezos-accuser-PtParisB, tezos-baker-PtParisB, tezos-accuser-Proxford, tezos-baker-Proxford]
+        formula: [tezos-smart-rollup-wasm-debugger, tezos-smart-rollup-node, tezos-dac-client, tezos-dac-node, tezos-dal-node, tezos-signer, tezos-codec, tezos-client, tezos-admin-client, tezos-node, tezos-accuser-PsQuebec, tezos-baker-PsQuebec, tezos-accuser-PsParisC, tezos-baker-PsParisC]
     steps:
       - name: Checkout
         uses: actions/checkout@v4
diff --git a/Formula/tezos-accuser-PsParisC.rb b/Formula/tezos-accuser-PsParisC.rb
index 48ed8426f..cf63df984 100644
--- a/Formula/tezos-accuser-PsParisC.rb
+++ b/Formula/tezos-accuser-PsParisC.rb
@@ -9,9 +9,9 @@ class << self
   end
   homepage "https://gitlab.com/tezos/tezos"
 
-  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v20.3", :shallow => false
+  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v21.0", :shallow => false
 
-  version "v20.3-1"
+  version "v21.0-1"
 
   build_dependencies = %w[pkg-config coreutils autoconf rsync wget rustup-init cmake opam]
   build_dependencies.each do |dependency|
@@ -26,7 +26,6 @@ class << self
 
   bottle do
     root_url "https://github.com/serokell/tezos-packaging/releases/download/#{TezosAccuserPsparisc.version}/"
-    sha256 cellar: :any, ventura: "490aa62c6fa8b5502578f677ee4d0e8993212cc59f34546b50a6b787d15986bd"
   end
 
   def make_deps
diff --git a/Formula/tezos-accuser-PtParisB.rb b/Formula/tezos-accuser-PsQuebec.rb
similarity index 76%
rename from Formula/tezos-accuser-PtParisB.rb
rename to Formula/tezos-accuser-PsQuebec.rb
index ef840fec8..bb8f0b6a3 100644
--- a/Formula/tezos-accuser-PtParisB.rb
+++ b/Formula/tezos-accuser-PsQuebec.rb
@@ -1,7 +1,7 @@
 # SPDX-FileCopyrightText: 2024 Oxhead Alpha
 # SPDX-License-Identifier: LicenseRef-MIT-OA
 
-class TezosAccuserPtparisb < Formula
+class TezosAccuserPsquebec < Formula
   @all_bins = []
 
   class << self
@@ -9,9 +9,9 @@ class << self
   end
   homepage "https://gitlab.com/tezos/tezos"
 
-  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v20.3", :shallow => false
+  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v21.0", :shallow => false
 
-  version "v20.3-1"
+  version "v21.0-1"
 
   build_dependencies = %w[pkg-config coreutils autoconf rsync wget rustup-init cmake opam]
   build_dependencies.each do |dependency|
@@ -25,8 +25,7 @@ class << self
   desc "Daemon for accusing"
 
   bottle do
-    root_url "https://github.com/serokell/tezos-packaging/releases/download/#{TezosAccuserPtparisb.version}/"
-    sha256 cellar: :any, ventura: "b8f6cb6a21cf2cf703cfdf61cf259414a5c6f7bfa950fc6470ff56c08ff9fe49"
+    root_url "https://github.com/serokell/tezos-packaging/releases/download/#{TezosAccuserPsquebec.version}/"
   end
 
   def make_deps
@@ -60,7 +59,7 @@ def install
 
       set -euo pipefail
 
-      accuser="#{bin}/octez-accuser-PtParisB"
+      accuser="#{bin}/octez-accuser-PsQuebec"
 
       accuser_config="$TEZOS_CLIENT_DIR/config"
       mkdir -p "$TEZOS_CLIENT_DIR"
@@ -75,21 +74,21 @@ def install
 
       exec "$accuser" --endpoint "$NODE_RPC_SCHEME://$NODE_RPC_ADDR" run
     EOS
-    File.write("tezos-accuser-PtParisB-start", startup_contents)
-    bin.install "tezos-accuser-PtParisB-start"
+    File.write("tezos-accuser-PsQuebec-start", startup_contents)
+    bin.install "tezos-accuser-PsQuebec-start"
     make_deps
-    install_template "src/proto_019_PtParisB/bin_accuser/main_accuser_019_PtParisB.exe",
-                     "_build/default/src/proto_019_PtParisB/bin_accuser/main_accuser_019_PtParisB.exe",
-                     "octez-accuser-PtParisB"
+    install_template "src/proto_021_PsQuebec/bin_accuser/main_accuser_021_PsQuebec.exe",
+                     "_build/default/src/proto_021_PsQuebec/bin_accuser/main_accuser_021_PsQuebec.exe",
+                     "octez-accuser-PsQuebec"
   end
 
   service do
-    run opt_bin/"tezos-accuser-PtParisB-start"
+    run opt_bin/"tezos-accuser-PsQuebec-start"
     require_root true
     environment_variables TEZOS_CLIENT_DIR: var/"lib/tezos/client", NODE_RPC_SCHEME: "http", NODE_RPC_ADDR: "localhost:8732"
     keep_alive true
-    log_path var/"log/tezos-accuser-PtParisB.log"
-    error_log_path var/"log/tezos-accuser-PtParisB.log"
+    log_path var/"log/tezos-accuser-PsQuebec.log"
+    error_log_path var/"log/tezos-accuser-PsQuebec.log"
   end
 
   def post_install
diff --git a/Formula/tezos-admin-client.rb b/Formula/tezos-admin-client.rb
index 1a91068b5..6b8ba29d0 100644
--- a/Formula/tezos-admin-client.rb
+++ b/Formula/tezos-admin-client.rb
@@ -9,9 +9,9 @@ class << self
   end
   homepage "https://gitlab.com/tezos/tezos"
 
-  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v20.3", :shallow => false
+  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v21.0", :shallow => false
 
-  version "v20.3-1"
+  version "v21.0-1"
 
   build_dependencies = %w[pkg-config coreutils autoconf rsync wget rustup-init cmake opam]
   build_dependencies.each do |dependency|
@@ -26,7 +26,6 @@ class << self
 
   bottle do
     root_url "https://github.com/serokell/tezos-packaging/releases/download/#{TezosAdminClient.version}/"
-    sha256 cellar: :any, ventura: "5ba0c3cc55109cbafa9462d5371b6fbb62e57d5df14ef8315cfc584e65aa5c07"
   end
 
   def make_deps
diff --git a/Formula/tezos-baker-PsParisC.rb b/Formula/tezos-baker-PsParisC.rb
index 59e2b7a82..ff9b308a8 100644
--- a/Formula/tezos-baker-PsParisC.rb
+++ b/Formula/tezos-baker-PsParisC.rb
@@ -9,9 +9,9 @@ class << self
   end
   homepage "https://gitlab.com/tezos/tezos"
 
-  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v20.3", :shallow => false
+  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v21.0", :shallow => false
 
-  version "v20.3-1"
+  version "v21.0-1"
 
   build_dependencies = %w[pkg-config coreutils autoconf rsync wget rustup-init cmake opam]
   build_dependencies.each do |dependency|
@@ -26,7 +26,6 @@ class << self
 
   bottle do
     root_url "https://github.com/serokell/tezos-packaging/releases/download/#{TezosBakerPsparisc.version}/"
-    sha256 cellar: :any, ventura: "e8b61dc8a01d2de538c89bb6e020df81e6d64f2ede819a62fe5d0230efbc6b33"
   end
 
   def make_deps
diff --git a/Formula/tezos-baker-PtParisB.rb b/Formula/tezos-baker-PsQuebec.rb
similarity index 78%
rename from Formula/tezos-baker-PtParisB.rb
rename to Formula/tezos-baker-PsQuebec.rb
index 02be3df83..df50f80d7 100644
--- a/Formula/tezos-baker-PtParisB.rb
+++ b/Formula/tezos-baker-PsQuebec.rb
@@ -1,7 +1,7 @@
 # SPDX-FileCopyrightText: 2024 Oxhead Alpha
 # SPDX-License-Identifier: LicenseRef-MIT-OA
 
-class TezosBakerPtparisb < Formula
+class TezosBakerPsquebec < Formula
   @all_bins = []
 
   class << self
@@ -9,9 +9,9 @@ class << self
   end
   homepage "https://gitlab.com/tezos/tezos"
 
-  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v20.3", :shallow => false
+  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v21.0", :shallow => false
 
-  version "v20.3-1"
+  version "v21.0-1"
 
   build_dependencies = %w[pkg-config coreutils autoconf rsync wget rustup-init cmake opam]
   build_dependencies.each do |dependency|
@@ -25,8 +25,7 @@ class << self
   desc "Daemon for baking"
 
   bottle do
-    root_url "https://github.com/serokell/tezos-packaging/releases/download/#{TezosBakerPtparisb.version}/"
-    sha256 cellar: :any, ventura: "8836c1c1d5f4d7e0c8777b953e1a7e0d028ce686a84e1acd402e09420ba09009"
+    root_url "https://github.com/serokell/tezos-packaging/releases/download/#{TezosBakerPsquebec.version}/"
   end
 
   def make_deps
@@ -60,7 +59,7 @@ def install
 
       set -euo pipefail
 
-      baker="#{bin}/octez-baker-PtParisB"
+      baker="#{bin}/octez-baker-PsQuebec"
 
       baker_config="$TEZOS_CLIENT_DIR/config"
       mkdir -p "$TEZOS_CLIENT_DIR"
@@ -85,21 +84,21 @@ def install
           launch_baker "$BAKER_ACCOUNT"
       fi
     EOS
-    File.write("tezos-baker-PtParisB-start", startup_contents)
-    bin.install "tezos-baker-PtParisB-start"
+    File.write("tezos-baker-PsQuebec-start", startup_contents)
+    bin.install "tezos-baker-PsQuebec-start"
     make_deps
-    install_template "src/proto_019_PtParisB/bin_baker/main_baker_019_PtParisB.exe",
-                     "_build/default/src/proto_019_PtParisB/bin_baker/main_baker_019_PtParisB.exe",
-                     "octez-baker-PtParisB"
+    install_template "src/proto_021_PsQuebec/bin_baker/main_baker_021_PsQuebec.exe",
+                     "_build/default/src/proto_021_PsQuebec/bin_baker/main_baker_021_PsQuebec.exe",
+                     "octez-baker-PsQuebec"
   end
 
   service do
-    run opt_bin/"tezos-baker-PtParisB-start"
+    run opt_bin/"tezos-baker-PsQuebec-start"
     require_root true
     environment_variables TEZOS_CLIENT_DIR: var/"lib/tezos/client", TEZOS_NODE_DIR: "", NODE_RPC_SCHEME: "http", NODE_RPC_ADDR: "localhost:8732", BAKER_ACCOUNT: ""
     keep_alive true
-    log_path var/"log/tezos-baker-PtParisB.log"
-    error_log_path var/"log/tezos-baker-PtParisB.log"
+    log_path var/"log/tezos-baker-PsQuebec.log"
+    error_log_path var/"log/tezos-baker-PsQuebec.log"
   end
 
   def post_install
diff --git a/Formula/tezos-client.rb b/Formula/tezos-client.rb
index 3db8fd623..7bf2b5d53 100644
--- a/Formula/tezos-client.rb
+++ b/Formula/tezos-client.rb
@@ -9,9 +9,9 @@ class << self
   end
   homepage "https://gitlab.com/tezos/tezos"
 
-  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v20.3", :shallow => false
+  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v21.0", :shallow => false
 
-  version "v20.3-1"
+  version "v21.0-1"
 
   build_dependencies = %w[pkg-config coreutils autoconf rsync wget rustup-init cmake opam opam]
   build_dependencies.each do |dependency|
@@ -26,7 +26,6 @@ class << self
 
   bottle do
     root_url "https://github.com/serokell/tezos-packaging/releases/download/#{TezosClient.version}/"
-    sha256 cellar: :any, ventura: "4efb6f382cecbd3cb51a42f8ec32c94e030212a4339294fb61eff120817b855f"
   end
 
   def make_deps
diff --git a/Formula/tezos-codec.rb b/Formula/tezos-codec.rb
index 7eb11ea60..d0aa3050e 100644
--- a/Formula/tezos-codec.rb
+++ b/Formula/tezos-codec.rb
@@ -9,9 +9,9 @@ class << self
   end
   homepage "https://gitlab.com/tezos/tezos"
 
-  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v20.3", :shallow => false
+  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v21.0", :shallow => false
 
-  version "v20.3-1"
+  version "v21.0-1"
 
   build_dependencies = %w[pkg-config coreutils autoconf rsync wget rustup-init cmake opam]
   build_dependencies.each do |dependency|
@@ -26,7 +26,6 @@ class << self
 
   bottle do
     root_url "https://github.com/serokell/tezos-packaging/releases/download/#{TezosCodec.version}/"
-    sha256 cellar: :any, ventura: "7332ca78fd2aa4f91694629c278a9be92b381e16d89e49e8c5a2d75ea658446e"
   end
 
   def make_deps
diff --git a/Formula/tezos-dac-client.rb b/Formula/tezos-dac-client.rb
index 6d047ef19..e40d30169 100644
--- a/Formula/tezos-dac-client.rb
+++ b/Formula/tezos-dac-client.rb
@@ -9,9 +9,9 @@ class << self
   end
   homepage "https://gitlab.com/tezos/tezos"
 
-  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v20.3", :shallow => false
+  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v21.0", :shallow => false
 
-  version "v20.3-1"
+  version "v21.0-1"
 
   build_dependencies = %w[pkg-config coreutils autoconf rsync wget rustup-init cmake opam]
   build_dependencies.each do |dependency|
@@ -26,7 +26,6 @@ class << self
 
   bottle do
     root_url "https://github.com/serokell/tezos-packaging/releases/download/#{TezosDacClient.version}/"
-    sha256 cellar: :any, ventura: "5049f227af507b9e9c1daad5f712b7f557b0034d743952c9f3f0994c2e54541e"
   end
 
   def make_deps
diff --git a/Formula/tezos-dac-node.rb b/Formula/tezos-dac-node.rb
index 34240ec0e..cdb77739d 100644
--- a/Formula/tezos-dac-node.rb
+++ b/Formula/tezos-dac-node.rb
@@ -9,9 +9,9 @@ class << self
   end
   homepage "https://gitlab.com/tezos/tezos"
 
-  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v20.3", :shallow => false
+  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v21.0", :shallow => false
 
-  version "v20.3-1"
+  version "v21.0-1"
 
   build_dependencies = %w[pkg-config coreutils autoconf rsync wget rustup-init cmake opam]
   build_dependencies.each do |dependency|
@@ -26,7 +26,6 @@ class << self
 
   bottle do
     root_url "https://github.com/serokell/tezos-packaging/releases/download/#{TezosDacNode.version}/"
-    sha256 cellar: :any, ventura: "71efd560049626a0dbb7e0a47d46c8d379d75a0c0eee1d93bf6a0210af267266"
   end
 
   def make_deps
diff --git a/Formula/tezos-dal-node.rb b/Formula/tezos-dal-node.rb
index ac2e21544..b18c0d261 100644
--- a/Formula/tezos-dal-node.rb
+++ b/Formula/tezos-dal-node.rb
@@ -9,9 +9,9 @@ class << self
   end
   homepage "https://gitlab.com/tezos/tezos"
 
-  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v20.3", :shallow => false
+  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v21.0", :shallow => false
 
-  version "v20.3-1"
+  version "v21.0-1"
 
   build_dependencies = %w[pkg-config coreutils autoconf rsync wget rustup-init cmake opam]
   build_dependencies.each do |dependency|
@@ -26,7 +26,6 @@ class << self
 
   bottle do
     root_url "https://github.com/serokell/tezos-packaging/releases/download/#{TezosDalNode.version}/"
-    sha256 cellar: :any, ventura: "28e1064941f25d217c1f782aa814f9cfbde6c8ad0fc914dd7a15ee4ab4c08252"
   end
 
   def make_deps
diff --git a/Formula/tezos-node-ghostnet.rb b/Formula/tezos-node-ghostnet.rb
index 5ce2d7ed5..1a2f28add 100644
--- a/Formula/tezos-node-ghostnet.rb
+++ b/Formula/tezos-node-ghostnet.rb
@@ -3,7 +3,7 @@
 
 class TezosNodeGhostnet < Formula
   url "file:///dev/null"
-  version "v20.3-1"
+  version "v21.0-1"
 
   depends_on "tezos-node"
 
diff --git a/Formula/tezos-node-mainnet.rb b/Formula/tezos-node-mainnet.rb
index 68381bc75..3ef12c626 100644
--- a/Formula/tezos-node-mainnet.rb
+++ b/Formula/tezos-node-mainnet.rb
@@ -3,7 +3,7 @@
 
 class TezosNodeMainnet < Formula
   url "file:///dev/null"
-  version "v20.3-1"
+  version "v21.0-1"
 
   depends_on "tezos-node"
 
diff --git a/Formula/tezos-node.rb b/Formula/tezos-node.rb
index a835d7a26..0f698f2a7 100644
--- a/Formula/tezos-node.rb
+++ b/Formula/tezos-node.rb
@@ -9,9 +9,9 @@ class << self
   end
   homepage "https://gitlab.com/tezos/tezos"
 
-  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v20.3", :shallow => false
+  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v21.0", :shallow => false
 
-  version "v20.3-1"
+  version "v21.0-1"
 
   build_dependencies = %w[pkg-config coreutils autoconf rsync wget rustup-init cmake opam]
   build_dependencies.each do |dependency|
@@ -26,7 +26,6 @@ class << self
 
   bottle do
     root_url "https://github.com/serokell/tezos-packaging/releases/download/#{TezosNode.version}/"
-    sha256 cellar: :any, ventura: "fb0bac1a458ee6821591e180ec8cf9e54afea1927d43070ee1443cf8f5399304"
   end
 
   def make_deps
diff --git a/Formula/tezos-signer-http.rb b/Formula/tezos-signer-http.rb
index 436487dac..7edf0ea22 100644
--- a/Formula/tezos-signer-http.rb
+++ b/Formula/tezos-signer-http.rb
@@ -3,7 +3,7 @@
 
 class TezosSignerHttp < Formula
   url "file:///dev/null"
-  version "v20.3-1"
+  version "v21.0-1"
 
   depends_on "tezos-signer"
 
diff --git a/Formula/tezos-signer-https.rb b/Formula/tezos-signer-https.rb
index bcbf50353..694cfa98c 100644
--- a/Formula/tezos-signer-https.rb
+++ b/Formula/tezos-signer-https.rb
@@ -3,7 +3,7 @@
 
 class TezosSignerHttps < Formula
   url "file:///dev/null"
-  version "v20.3-1"
+  version "v21.0-1"
 
   depends_on "tezos-signer"
 
diff --git a/Formula/tezos-signer-tcp.rb b/Formula/tezos-signer-tcp.rb
index 360a48292..a2c7121dc 100644
--- a/Formula/tezos-signer-tcp.rb
+++ b/Formula/tezos-signer-tcp.rb
@@ -3,7 +3,7 @@
 
 class TezosSignerTcp < Formula
   url "file:///dev/null"
-  version "v20.3-1"
+  version "v21.0-1"
 
   depends_on "tezos-signer"
 
diff --git a/Formula/tezos-signer-unix.rb b/Formula/tezos-signer-unix.rb
index 8147d935d..d2b5e5a8f 100644
--- a/Formula/tezos-signer-unix.rb
+++ b/Formula/tezos-signer-unix.rb
@@ -3,7 +3,7 @@
 
 class TezosSignerUnix < Formula
   url "file:///dev/null"
-  version "v20.3-1"
+  version "v21.0-1"
 
   depends_on "tezos-signer"
 
diff --git a/Formula/tezos-signer.rb b/Formula/tezos-signer.rb
index e27faf36c..d47a7d8c2 100644
--- a/Formula/tezos-signer.rb
+++ b/Formula/tezos-signer.rb
@@ -9,9 +9,9 @@ class << self
   end
   homepage "https://gitlab.com/tezos/tezos"
 
-  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v20.3", :shallow => false
+  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v21.0", :shallow => false
 
-  version "v20.3-1"
+  version "v21.0-1"
 
   build_dependencies = %w[pkg-config coreutils autoconf rsync wget rustup-init cmake opam]
   build_dependencies.each do |dependency|
@@ -26,7 +26,6 @@ class << self
 
   bottle do
     root_url "https://github.com/serokell/tezos-packaging/releases/download/#{TezosSigner.version}/"
-    sha256 cellar: :any, ventura: "5cc06d5b860d4e8c2084f324d977e38cbee4a8671c5a8470ac41a8ebaafe5aa3"
   end
 
   def make_deps
diff --git a/Formula/tezos-smart-rollup-node.rb b/Formula/tezos-smart-rollup-node.rb
index c6d7da57b..791778faf 100644
--- a/Formula/tezos-smart-rollup-node.rb
+++ b/Formula/tezos-smart-rollup-node.rb
@@ -11,9 +11,9 @@ class << self
   end
   homepage "https://gitlab.com/tezos/tezos"
 
-  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v20.3", :shallow => false
+  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v21.0", :shallow => false
 
-  version "v20.3-1"
+  version "v21.0-1"
 
   build_dependencies = %w[pkg-config coreutils autoconf rsync wget rustup-init cmake opam]
   build_dependencies.each do |dependency|
@@ -28,7 +28,6 @@ class << self
 
   bottle do
     root_url "https://github.com/serokell/tezos-packaging/releases/download/#{TezosSmartRollupNode.version}/"
-    sha256 cellar: :any, ventura: "d063c53cf47ece2ebe64b2221340c05cbca1094e7beaa0dc4ed4d246ab7b0afd"
   end
 
   def make_deps
diff --git a/Formula/tezos-smart-rollup-wasm-debugger.rb b/Formula/tezos-smart-rollup-wasm-debugger.rb
index f1168286a..571affb69 100644
--- a/Formula/tezos-smart-rollup-wasm-debugger.rb
+++ b/Formula/tezos-smart-rollup-wasm-debugger.rb
@@ -10,9 +10,9 @@ class << self
   end
   homepage "https://gitlab.com/tezos/tezos"
 
-  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v20.3", :shallow => false
+  url "https://gitlab.com/tezos/tezos.git", :tag => "octez-v21.0", :shallow => false
 
-  version "v20.3-1"
+  version "v21.0-1"
 
   build_dependencies = %w[pkg-config coreutils autoconf rsync wget rustup-init cmake opam]
   build_dependencies.each do |dependency|
@@ -27,7 +27,6 @@ class << self
 
   bottle do
     root_url "https://github.com/serokell/tezos-packaging/releases/download/#{TezosSmartRollupWasmDebugger.version}/"
-    sha256 cellar: :any, ventura: "8afc3d417f115d99df4d9790da280b1f92c09864b9be56d07f1cb8533cf36b62"
   end
 
   def make_deps
diff --git a/baking/pyproject.toml b/baking/pyproject.toml
index 045f99255..fa0c90935 100644
--- a/baking/pyproject.toml
+++ b/baking/pyproject.toml
@@ -14,7 +14,7 @@ description = "Package that provides systemd services that orchestrate other ser
 license = { text = "LicenseRef-MIT-OA" }
 requires-python = ">=3.8"
 readme = "README.md"
-version = "v20.3"
+version = "v21.0"
 
 [tool.setuptools.packages.find]
 where= ["src"]
diff --git a/baking/src/tezos_baking/steps.py b/baking/src/tezos_baking/steps.py
index f2565dcfa..5510c3a5d 100644
--- a/baking/src/tezos_baking/steps.py
+++ b/baking/src/tezos_baking/steps.py
@@ -107,6 +107,7 @@ def pprint_options(self):
     "mainnet": "Main Tezos network",
     "ghostnet": "Long running test network, currently using the Paris Tezos protocol",
     "pariscnet": "Test network using the PsParisC Tezos protocol",
+    "quebecnet": "Test network using the PsQuebec Tezos protocol",
 }
 
 # Steps
diff --git a/docker/active-protocols b/docker/active-protocols
index 474c463c3..d60f30420 100644
--- a/docker/active-protocols
+++ b/docker/active-protocols
@@ -1,4 +1,3 @@
-Proxford
-PtParisB
 PsParisC
+PsQuebec
 alpha
diff --git a/docker/build/Dockerfile b/docker/build/Dockerfile
index 99c2492e1..b35cdce43 100644
--- a/docker/build/Dockerfile
+++ b/docker/build/Dockerfile
@@ -1,18 +1,17 @@
 # SPDX-FileCopyrightText: 2020 TQ Tezos <https://tqtezos.com/>
 #
 # SPDX-License-Identifier: LicenseRef-MIT-TQ
-FROM alpine:3.17
+FROM alpine:3.20
 RUN apk update
 RUN apk --no-cache --virtual add rsync git m4 build-base patch unzip \
   bubblewrap wget pkgconfig gmp-dev libev-dev \
   hidapi-dev eudev-dev perl opam libusb-dev bash \
-  autoconf automake libtool linux-headers cargo \
+  autoconf automake libtool linux-headers \
   libffi-dev zlib-dev zlib-static coreutils perl-utils cmake \
-  protobuf protobuf-dev sqlite-dev
+  protobuf protobuf-dev sqlite-dev sqlite-libs cargo upx libc-dev \
+  sqlite-static
 COPY ./build/build-rust.sh /build-rust.sh
 RUN /build-rust.sh
-COPY ./build/build-upx.sh /build-upx.sh
-RUN /build-upx.sh
 ARG OCTEZ_VERSION
 RUN git clone --single-branch --depth 1 --branch "$OCTEZ_VERSION" https://gitlab.com/tezos/tezos.git
 WORKDIR /tezos
diff --git a/docker/build/build-rust.sh b/docker/build/build-rust.sh
index b11224d4b..bf0c7feb9 100755
--- a/docker/build/build-rust.sh
+++ b/docker/build/build-rust.sh
@@ -7,4 +7,4 @@ set -euo pipefail
 
 wget https://sh.rustup.rs/rustup-init.sh
 chmod +x rustup-init.sh
-./rustup-init.sh --profile minimal --default-toolchain 1.71.1 -y
+./rustup-init.sh --profile minimal --default-toolchain 1.78.0 -y
diff --git a/docker/build/build-tezos.sh b/docker/build/build-tezos.sh
index e4429b64e..a10238cae 100755
--- a/docker/build/build-tezos.sh
+++ b/docker/build/build-tezos.sh
@@ -11,5 +11,6 @@ eval "$(opam env)"
 # Disable usage of instructions from the ADX extension to avoid incompatibility
 # with old CPUs, see https://gitlab.com/dannywillems/ocaml-bls12-381/-/merge_requests/135/
 export BLST_PORTABLE="yes"
+
 make static
 chmod +w octez-*
diff --git a/docker/build/fedora/build.py b/docker/build/fedora/build.py
index aa122c46c..2fb5e95d1 100755
--- a/docker/build/fedora/build.py
+++ b/docker/build/fedora/build.py
@@ -58,7 +58,7 @@ def build_fedora(args=None) -> List[str]:
 
     # copr build infrastructure uses latest stable fedora and `mock` for builds
     # so we should also keep that way
-    images = ["40"]
+    images = ["41"]
 
     packages_to_build = get_packages_to_build(args.packages)
 
diff --git a/docker/build/util/build.py b/docker/build/util/build.py
index 452b108ca..4b3c26667 100644
--- a/docker/build/util/build.py
+++ b/docker/build/util/build.py
@@ -88,7 +88,7 @@ def run_build(args: Arguments) -> List[str]:
         f"""
     {virtualisation_engine}
     build -t tezos-{target_os}-{image}
-    -f docker/package/Dockerfile-{target_os} --build-arg OCTEZ_VERSION={octez_version} --build-arg dist={image} .
+    -f docker/package/Dockerfile-{target_os} --build-arg dist={image} .
     """
     )
 
diff --git a/docker/create_opam_repo.sh b/docker/create_opam_repo.sh
new file mode 100755
index 000000000..6f9db68c9
--- /dev/null
+++ b/docker/create_opam_repo.sh
@@ -0,0 +1,76 @@
+#!/usr/bin/env bash
+# SPDX-FileCopyrightText: 2024 Oxhead Alpha
+# SPDX-License-Identifier: LicenseRef-MIT-OA
+
+set -eu
+
+# will be set by version.sh
+opam_repository_tag=''
+ocaml_version=''
+. tezos/scripts/version.sh
+
+echo "Shallow clone of opam repository (requires git protocol version 2)"
+mkdir opam-repository
+cd opam-repository
+git init
+git config --local protocol.version 2
+git remote add origin https://github.com/ocaml/opam-repository
+git fetch --depth 1 origin "$opam_repository_tag"
+git checkout "$opam_repository_tag"
+# No need to store the whole Git history in the Docker images.
+rm -rf .git .github .gitignore .gitattributes
+cd ..
+
+# copying virtual opam file which depends on everything octez need
+mkdir -p opam-repository/packages/octez-deps/octez-deps.dev
+cp tezos/opam/virtual/octez-deps.opam.locked opam-repository/packages/octez-deps/octez-deps.dev/opam
+
+# This package adds some constraints to the solution found by the opam solver.
+dummy_pkg=octez-dummy
+dummy_opam_dir="opam-repository/packages/${dummy_pkg}/${dummy_pkg}.dev"
+dummy_opam="${dummy_opam_dir}/opam"
+mkdir -p "${dummy_opam_dir}"
+echo 'opam-version: "2.0"' > "$dummy_opam"
+echo "depends: [ \"ocaml\" { = \"$ocaml_version\" } ]" >> "$dummy_opam"
+echo 'conflicts:[' >> "$dummy_opam"
+grep -r "^flags: *\[ *avoid-version *\]" -l opam-repository/packages |
+  LC_COLLATE=C sort -u |
+  while read -r f; do
+    f=$(dirname "$f")
+    f=$(basename "$f")
+    p=$(echo "$f" | cut -d '.' -f '1')
+    v=$(echo "$f" | cut -d '.' -f '2-')
+    echo "\"$p\" {= \"$v\"}" >> $dummy_opam
+  done
+# FIXME: https://gitlab.com/tezos/tezos/-/issues/5832
+# opam unintentionally picks up a windows dependency. We add a
+# conflict here to work around it.
+echo '"ocamlbuild" {= "0.14.2+win" }' >> $dummy_opam
+echo ']' >> "$dummy_opam"
+
+# opam solver requires arch variable to be set, otherwise it fails to resolve anything
+# but vendored opam deps have to be same for both architectures
+# so we filter them separately and then merge with rsync
+cp -r opam-repository x86_64
+mv opam-repository arm64
+
+filter() {
+ pushd "$1"
+ OPAMSOLVERTIMEOUT=600 opam admin filter --yes --resolve \
+   "octez-deps,ocaml,ocaml-base-compiler,odoc<2.3.0,ledgerwallet-tezos,caqti-driver-postgresql,$dummy_pkg" \
+   --environment "os=linux,arch=$1,os-family=debian"
+ rm -rf packages/"$dummy_pkg" packages/octez-deps
+ popd
+}
+
+filter x86_64
+filter arm64
+
+rsync -av x86_64/ arm64/
+rm -rf x86_64
+mv arm64 opam-repository
+
+cd opam-repository
+opam admin add-hashes sha256 sha512
+opam admin cache
+cd ..
diff --git a/docker/fetch_tezos_sources.py b/docker/fetch_tezos_sources.py
index 043dce09c..864972c0c 100755
--- a/docker/fetch_tezos_sources.py
+++ b/docker/fetch_tezos_sources.py
@@ -6,11 +6,11 @@
 import os
 import re
 import shutil
+import json
+import time
 
-octez_version = os.getenv("OCTEZ_VERSION", None)
-
-if not octez_version:
-    raise Exception("Environment variable OCTEZ_VERSION is not set.")
+with open("meta.json") as f:
+    octez_version = json.loads(f.read()).get("tezos_ref", "octez-v21.0")
 
 subprocess.run(
     [
@@ -25,33 +25,3 @@
 )
 # NOTE: it's important to keep the `tezos/.git` directory here, because the
 # git tag is used to set the version in the Octez binaries.
-
-subprocess.run(
-    [
-        "git",
-        "clone",
-        "https://gitlab.com/tezos/opam-repository.git",
-        "opam-repository-tezos",
-    ]
-)
-
-opam_repository_tag = (
-    subprocess.run(
-        ". ./tezos/scripts/version.sh; echo $opam_repository_tag",
-        stdout=subprocess.PIPE,
-        shell=True,
-    )
-    .stdout.decode()
-    .strip()
-)
-
-os.chdir("opam-repository-tezos")
-subprocess.run(["git", "checkout", opam_repository_tag])
-subprocess.run(["rm", "-rf", ".git"])
-subprocess.run(["rm", "-r", "zcash-params"])
-subprocess.run(["scripts/create_opam_repo.sh"])
-subprocess.run(["mv", "opam-repository", ".."])
-os.chdir("..")
-subprocess.run(["rm", "-rf", "opam-repository-tezos"])
-os.chdir("opam-repository")
-subprocess.run(["opam", "admin", "cache"])
diff --git a/docker/octez-executables b/docker/octez-executables
index 8616215cc..3eec20aa3 100644
--- a/docker/octez-executables
+++ b/docker/octez-executables
@@ -4,14 +4,11 @@ octez-dac-client
 octez-dac-node
 octez-dal-node
 octez-signer
-octez-proxy-server
 octez-codec
 octez-client
 octez-admin-client
 octez-node
+octez-accuser-PsQuebec
+octez-baker-PsQuebec
 octez-accuser-PsParisC
 octez-baker-PsParisC
-octez-accuser-PtParisB
-octez-baker-PtParisB
-octez-accuser-Proxford
-octez-baker-Proxford
diff --git a/docker/package/Dockerfile-fedora b/docker/package/Dockerfile-fedora
index cd5ebc5a1..972b15e43 100644
--- a/docker/package/Dockerfile-fedora
+++ b/docker/package/Dockerfile-fedora
@@ -18,10 +18,13 @@ RUN useradd dockerbuilder
 ENV HOME /tezos-packaging
 
 WORKDIR /tezos-packaging/docker/sources
-ARG OCTEZ_VERSION
+COPY meta.json meta.json
 COPY docker/fetch_tezos_sources.py .
 RUN python3 fetch_tezos_sources.py
 
+COPY docker/create_opam_repo.sh .
+RUN ./create_opam_repo.sh
+
 WORKDIR /tezos-packaging/docker
 COPY meta.json /tezos-packaging/meta.json
 COPY protocols.json /tezos-packaging/protocols.json
diff --git a/docker/package/Dockerfile-ubuntu b/docker/package/Dockerfile-ubuntu
index 77ce4f488..57dd9db3e 100644
--- a/docker/package/Dockerfile-ubuntu
+++ b/docker/package/Dockerfile-ubuntu
@@ -1,12 +1,30 @@
 # SPDX-FileCopyrightText: 2021 Oxhead Alpha
 # SPDX-License-Identifier: LicenseRef-MIT-OA
 
+ARG dist
+FROM ubuntu:focal AS srcs
+RUN apt update -y
+RUN apt install -y cargo-1.78 opam rsync python3
+
+WORKDIR /sources
+
+COPY meta.json meta.json
+COPY docker/fetch_tezos_sources.py .
+RUN python3 fetch_tezos_sources.py
+
+COPY docker/vendor-rust-deps.py .
+RUN python3 vendor-rust-deps.py
+
+COPY docker/create_opam_repo.sh .
+RUN ./create_opam_repo.sh
+
 ARG dist
 FROM ubuntu:${dist}
 
 ENV DEBIAN_FRONTEND="noninteractive"
-RUN apt update
-RUN apt install -y libev-dev libgmp-dev libhidapi-dev libffi-dev \
+
+RUN apt-get update -y
+RUN apt-get install -y libev-dev libgmp-dev libhidapi-dev libffi-dev \
                    zlib1g-dev libpq-dev m4 perl pkg-config \
                    debhelper dh-make dh-python devscripts autotools-dev \
                    python3-all python3-setuptools wget rsync cmake \
@@ -18,18 +36,17 @@ RUN if [ "$dist" = "focal" ]; then apt-get install -y dh-systemd; fi
 
 RUN install -m 0755 /usr/bin/python3 /usr/bin/builder
 
-RUN if [ "$dist" != "noble"]; then add-apt-repository ppa:ubuntu-mozilla-security/rust-next -y && apt-get update -y; fi
-RUN apt-get -y install cargo opam
+RUN apt-get -y install opam cargo cargo-1.78
 
 ENV USER dockerbuilder
 RUN useradd dockerbuilder
 
 ENV HOME /tezos-packaging
 
-ARG OCTEZ_VERSION
 WORKDIR /tezos-packaging/docker/sources
-COPY docker/fetch_tezos_sources.py .
-RUN python3 fetch_tezos_sources.py
+
+COPY --from=srcs /sources/tezos tezos
+COPY --from=srcs /sources/opam-repository opam-repository
 
 WORKDIR /tezos-packaging/docker
 COPY meta.json /tezos-packaging/meta.json
diff --git a/docker/package/package_generator.py b/docker/package/package_generator.py
index 5b658d213..a2cf9b2d8 100755
--- a/docker/package/package_generator.py
+++ b/docker/package/package_generator.py
@@ -95,7 +95,7 @@ def get_fedora_run_deps(binaries_dir):
     ]
 
 
-def get_build_deps(binaries_dir):
+def get_build_deps(binaries_dir, extra_deps=[]):
     """
     List all the common build dependencies. Return an empty list when using prebuilt static binaries.
     """
@@ -111,13 +111,13 @@ def get_build_deps(binaries_dir):
         "wget",
         "unzip",
         "rsync",
-        "gcc",
         "cargo",
+        "gcc",
         "opam",
         "git",
         "autoconf",
         "coreutils",
-    ]
+    ] + extra_deps
 
 
 def build_fedora(args):
@@ -181,7 +181,7 @@ def build_ubuntu(args):
 
     binaries_dir = args.binaries_dir
 
-    build_deps = get_build_deps(binaries_dir)
+    build_deps = get_build_deps(binaries_dir, ["cargo-1.78"])
 
     home = os.environ["HOME"]
 
diff --git a/docker/package/packages.py b/docker/package/packages.py
index 3333ec060..1e9f62569 100644
--- a/docker/package/packages.py
+++ b/docker/package/packages.py
@@ -19,12 +19,14 @@
 networks = {
     "mainnet": "mainnet",
     "ghostnet": "ghostnet",
+    "quebecnet": "https://teztnets.com/quebecnet",
     "pariscnet": "https://teztnets.com/pariscnet",
 }
 networks_protos = {
     "mainnet": ["PsParisC"],
     "ghostnet": ["PsParisC"],
     "pariscnet": ["PsParisC"],
+    "quebecnet": ["PsQuebec"],
 }
 
 protocol_numbers = {
@@ -32,6 +34,7 @@
     "Proxford": "018",
     "PtParisB": "019",
     "PsParisC": "020",
+    "PsQuebec": "021",
 }
 
 signer_units = [
diff --git a/docker/package/scripts/build-binary.sh b/docker/package/scripts/build-binary.sh
index 2c5963b28..6984ed4fe 100755
--- a/docker/package/scripts/build-binary.sh
+++ b/docker/package/scripts/build-binary.sh
@@ -11,17 +11,26 @@ export OPAMROOT=$PWD/opamroot
 dune_filepath="$1"
 binary_name="$2"
 
+opam init local ./opam-repository --bare --disable-sandboxing
+
 cd tezos
-opam init local ../opam-repository --bare --disable-sandboxing
-opam switch create . --repositories=local --no-install
+
+ocaml_version=''
+
+source scripts/version.sh
+
+opam switch create . --repositories=local "ocaml-base-compiler.$ocaml_version" --no-install
+
+export OPAMSWITCH="$PWD"
+opam repository remove default > /dev/null 2>&1
 
 eval "$(opam env)"
-OPAMASSUMEDEPEXTS=true opam install conf-rust conf-rust-2021
+
+OPAMASSUMEDEPEXTS=true opam install conf-rust
 
 export CFLAGS="-fPIC ${CFLAGS:-}"
-OPAMASSUMEDEPEXTS=true opam install opam/virtual/octez-deps.opam --deps-only --criteria="-notuptodate,-changed,-removed"
+OPAMASSUMEDEPEXTS=true opam install opam/virtual/octez-deps.opam.locked --deps-only --criteria="-notuptodate,-changed,-removed"
 
-eval "$(opam env)"
 dune build "$dune_filepath"
 cp "./_build/default/$dune_filepath" "../$binary_name"
 cd ..
diff --git a/docker/supported_versions.json b/docker/supported_versions.json
index e886bba9a..e9d5c8ad8 100644
--- a/docker/supported_versions.json
+++ b/docker/supported_versions.json
@@ -5,7 +5,7 @@
     "noble"
   ],
   "fedora": [
-    "39",
-    "40"
+    "40",
+    "41"
   ]
 }
diff --git a/docker/tests/binaries.json b/docker/tests/binaries.json
index a2920800d..8cdf5abd6 100644
--- a/docker/tests/binaries.json
+++ b/docker/tests/binaries.json
@@ -6,17 +6,14 @@
         "tezos-dac-node",
         "tezos-dal-node",
         "tezos-signer",
-        "tezos-proxy-server",
         "tezos-codec",
         "tezos-client",
         "tezos-admin-client",
         "tezos-node",
+        "tezos-accuser-PsQuebec",
+        "tezos-baker-PsQuebec",
         "tezos-accuser-PsParisC",
         "tezos-baker-PsParisC",
-        "tezos-accuser-PtParisB",
-        "tezos-baker-PtParisB",
-        "tezos-accuser-Proxford",
-        "tezos-baker-Proxford",
         "tezos-sapling-params",
         "tezos-baking"
     ],
diff --git a/docker/vendor-rust-deps.py b/docker/vendor-rust-deps.py
new file mode 100644
index 000000000..84587486b
--- /dev/null
+++ b/docker/vendor-rust-deps.py
@@ -0,0 +1,44 @@
+#!/usr/bin/env python3
+# SPDX-FileCopyrightText: 2024 Oxhead Alpha
+# SPDX-License-Identifier: LicenseRef-MIT-OA
+
+import subprocess
+import os
+
+os.chdir("tezos/src/rust_deps")
+subprocess.run(["cargo-1.78", "vendor"], check=True)
+
+with open(".cargo/config.toml", "a") as f:
+    f.write(
+        """
+[source.crates-io]
+replace-with = "vendored-sources"
+
+[source.vendored-sources]
+directory = "vendor"
+    """
+    )
+
+# FIXME dirty hack to make dune copy vendor directory to the build directory and disignore internal files
+with open("dune", "r") as f:
+    dune = f.read()
+
+with open("dune", "w") as f:
+    f.write(
+        dune.replace(
+            "(source_tree .cargo)", "(source_tree .cargo) (source_tree vendor)"
+        )
+        + """
+(subdir vendor/futures-core/src/task (dirs :standard __internal))
+(subdir vendor/winnow/src (dirs :standard _tutorial _topic))
+(subdir vendor/clap/src (dirs :standard _cookbook _derive _tutorial))
+(subdir vendor/clap/src/_derive (dirs :standard _tutorial))
+(subdir vendor/clap-3.2.25/src (dirs :standard _cookbook _derive _tutorial))
+"""
+    )
+
+with open("build.sh", "r") as f:
+    build_sh = f.read()
+
+with open("build.sh", "w") as f:
+    f.write(build_sh.replace("cargo", "cargo-1.78"))
diff --git a/docs/support-policy.md b/docs/support-policy.md
index 490a16b20..2a90a823e 100644
--- a/docs/support-policy.md
+++ b/docs/support-policy.md
@@ -38,8 +38,8 @@ There are packages for `arm64` and `amd64` architectures.
 We aim to provide packages for all [currently supported Fedora releases](https://docs.fedoraproject.org/en-US/releases/).
 
 Currently, these are versions:
-* Fedora 39
 * Fedora 40
+* Fedora 41
 
 There are packages for `x86_64` and `aarch64` architectures.
 
diff --git a/flake.lock b/flake.lock
index 3ace05f82..5afa2be76 100644
--- a/flake.lock
+++ b/flake.lock
@@ -98,10 +98,25 @@
         "type": "github"
       }
     },
+    "crane": {
+      "locked": {
+        "lastModified": 1727316705,
+        "narHash": "sha256-/mumx8AQ5xFuCJqxCIOFCHTVlxHkMT21idpbgbm/TIE=",
+        "owner": "ipetkov",
+        "repo": "crane",
+        "rev": "5b03654ce046b5167e7b0bccbd8244cb56c16f0e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "ipetkov",
+        "repo": "crane",
+        "type": "github"
+      }
+    },
     "deploy-rs": {
       "inputs": {
         "flake-compat": "flake-compat_3",
-        "nixpkgs": "nixpkgs_4",
+        "nixpkgs": "nixpkgs_5",
         "utils": "utils"
       },
       "locked": {
@@ -417,7 +432,7 @@
     },
     "gomod2nix": {
       "inputs": {
-        "nixpkgs": "nixpkgs_6",
+        "nixpkgs": "nixpkgs_7",
         "utils": "utils_2"
       },
       "locked": {
@@ -729,7 +744,7 @@
     "nix2container": {
       "inputs": {
         "flake-utils": "flake-utils_5",
-        "nixpkgs": "nixpkgs_7"
+        "nixpkgs": "nixpkgs_8"
       },
       "locked": {
         "lastModified": 1658567952,
@@ -748,7 +763,7 @@
     "nix_2": {
       "inputs": {
         "lowdown-src": "lowdown-src_2",
-        "nixpkgs": "nixpkgs_5",
+        "nixpkgs": "nixpkgs_6",
         "nixpkgs-regression": "nixpkgs-regression_2"
       },
       "locked": {
@@ -769,7 +784,7 @@
     "nix_3": {
       "inputs": {
         "lowdown-src": "lowdown-src_3",
-        "nixpkgs": "nixpkgs_9"
+        "nixpkgs": "nixpkgs_10"
       },
       "locked": {
         "lastModified": 1633098935,
@@ -952,11 +967,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1657802959,
-        "narHash": "sha256-9+JWARSdlL8KiH3ymnKDXltE1vM+/WEJ78F5B1kjXys=",
+        "lastModified": 1726937504,
+        "narHash": "sha256-bvGoiQBvponpZh8ClUcmJ6QnsNKw0EMrCQJARK3bI1c=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "4a01ca36d6bfc133bc617e661916a81327c9bbc8",
+        "rev": "9357f4f23713673f310988025d9dc261c20e70c6",
         "type": "github"
       },
       "original": {
@@ -983,6 +998,21 @@
       }
     },
     "nixpkgs_10": {
+      "locked": {
+        "lastModified": 1632864508,
+        "narHash": "sha256-d127FIvGR41XbVRDPVvozUPQ/uRHbHwvfyKHwEt5xFM=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "82891b5e2c2359d7e58d08849e4c89511ab94234",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-21.05-small",
+        "type": "indirect"
+      }
+    },
+    "nixpkgs_11": {
       "locked": {
         "lastModified": 1674736538,
         "narHash": "sha256-/DszFMkAgYyB9dTWKkoZa9i0zcrA6Z4hYrOr/u/FSxY=",
@@ -1028,6 +1058,22 @@
       }
     },
     "nixpkgs_4": {
+      "locked": {
+        "lastModified": 1727335715,
+        "narHash": "sha256-1uw3y94dA4l22LkqHRIsb7qr3rV5XdxQFqctINfx8Cc=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "28b5b8af91ffd2623e995e20aee56510db49001a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_5": {
       "locked": {
         "lastModified": 1648219316,
         "narHash": "sha256-Ctij+dOi0ZZIfX5eMhgwugfvB+WZSrvVNAyAuANOsnQ=",
@@ -1043,7 +1089,7 @@
         "type": "github"
       }
     },
-    "nixpkgs_5": {
+    "nixpkgs_6": {
       "locked": {
         "lastModified": 1657693803,
         "narHash": "sha256-G++2CJ9u0E7NNTAi9n5G8TdDmGJXcIjkJ3NF8cetQB8=",
@@ -1059,7 +1105,7 @@
         "type": "github"
       }
     },
-    "nixpkgs_6": {
+    "nixpkgs_7": {
       "locked": {
         "lastModified": 1653581809,
         "narHash": "sha256-Uvka0V5MTGbeOfWte25+tfRL3moECDh1VwokWSZUdoY=",
@@ -1075,7 +1121,7 @@
         "type": "github"
       }
     },
-    "nixpkgs_7": {
+    "nixpkgs_8": {
       "locked": {
         "lastModified": 1654807842,
         "narHash": "sha256-ADymZpr6LuTEBXcy6RtFHcUZdjKTBRTMYwu19WOx17E=",
@@ -1090,7 +1136,7 @@
         "type": "github"
       }
     },
-    "nixpkgs_8": {
+    "nixpkgs_9": {
       "locked": {
         "lastModified": 1665087388,
         "narHash": "sha256-FZFPuW9NWHJteATOf79rZfwfRn5fE0wi9kRzvGfDHPA=",
@@ -1106,21 +1152,6 @@
         "type": "github"
       }
     },
-    "nixpkgs_9": {
-      "locked": {
-        "lastModified": 1632864508,
-        "narHash": "sha256-d127FIvGR41XbVRDPVvozUPQ/uRHbHwvfyKHwEt5xFM=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "82891b5e2c2359d7e58d08849e4c89511ab94234",
-        "type": "github"
-      },
-      "original": {
-        "id": "nixpkgs",
-        "ref": "nixos-21.05-small",
-        "type": "indirect"
-      }
-    },
     "nosys": {
       "locked": {
         "lastModified": 1667881534,
@@ -1212,11 +1243,11 @@
     "opam-repository_2": {
       "flake": false,
       "locked": {
-        "lastModified": 1711456989,
-        "narHash": "sha256-AekoreNjHvewT94l8iWBb/4cr4+FoCOS2GFpXA6HF3g=",
+        "lastModified": 1731448759,
+        "narHash": "sha256-HUqY3MuNLUf2etT9X/ZiHQtMQqU+LxwXzrm3AlOP634=",
         "owner": "ocaml",
         "repo": "opam-repository",
-        "rev": "518f55a1ee5da870035b9593f98db03f43ce7f5f",
+        "rev": "d4c6a480805e2a9eafb47afe89128b65244cbdac",
         "type": "github"
       },
       "original": {
@@ -1248,6 +1279,7 @@
     },
     "root": {
       "inputs": {
+        "crane": "crane",
         "flake-compat": "flake-compat",
         "flake-utils": "flake-utils",
         "nix": "nix",
@@ -1255,10 +1287,29 @@
         "nixpkgs-unstable": "nixpkgs-unstable",
         "opam-nix": "opam-nix",
         "opam-repository": "opam-repository_2",
+        "rust-overlay": "rust-overlay",
         "serokell-nix": "serokell-nix",
         "tezos": "tezos"
       }
     },
+    "rust-overlay": {
+      "inputs": {
+        "nixpkgs": "nixpkgs_4"
+      },
+      "locked": {
+        "lastModified": 1727317727,
+        "narHash": "sha256-yGYahXzCquyYEgf5GTtvtaN5hXbw20Ok2+o8uVxoaFs=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "a3d832f389606d7dc61a45b244c72ea472d1fcd4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
     "serokell-nix": {
       "inputs": {
         "deploy-rs": "deploy-rs",
@@ -1268,7 +1319,7 @@
         "gitignore-nix": "gitignore-nix",
         "haskell-nix": "haskell-nix",
         "nix": "nix_3",
-        "nixpkgs": "nixpkgs_10"
+        "nixpkgs": "nixpkgs_11"
       },
       "locked": {
         "lastModified": 1691752608,
@@ -1329,7 +1380,7 @@
         ],
         "n2c": "n2c",
         "nixago": "nixago",
-        "nixpkgs": "nixpkgs_8",
+        "nixpkgs": "nixpkgs_9",
         "nosys": "nosys",
         "yants": "yants"
       },
@@ -1365,11 +1416,11 @@
     "tezos": {
       "flake": false,
       "locked": {
-        "lastModified": 1727873034,
-        "narHash": "sha256-ma9QinkY1QwgNTdnRvdnVvnbHB5sFm274oHEmlxZlEY=",
+        "lastModified": 1731578075,
+        "narHash": "sha256-mradjnOZbZYDX4obNB2YYeWr0ZY+NmvEIDS7f4XgkRI=",
         "owner": "tezos",
         "repo": "tezos",
-        "rev": "4ec590460057d781cde78b438da0d64d64f8227f",
+        "rev": "87e7ddd4966c796aae882543d322f40aff94f901",
         "type": "gitlab"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index cd7329a70..6b599e39c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -16,6 +16,10 @@
 
     opam-nix.url = "github:tweag/opam-nix";
 
+    rust-overlay.url = "github:oxalica/rust-overlay";
+
+    crane.url = "github:ipetkov/crane";
+
     flake-compat.flake = false;
 
     opam-repository.url = "github:ocaml/opam-repository";
@@ -25,8 +29,10 @@
     tezos.flake = false;
   };
 
-  outputs = inputs@{ self, nixpkgs, nixpkgs-unstable, flake-utils, serokell-nix, nix, ... }:
+  outputs = inputs@{ self, nixpkgs, nixpkgs-unstable, flake-utils, serokell-nix, nix, rust-overlay, crane, ... }:
   let
+    pkgs = import nixpkgs { system = "x86_64-linux"; };
+    pkgs-unstable = import nixpkgs-unstable { system = "x86_64-linux"; overlays = [ rust-overlay.overlays.default ]; };
     pkgs-darwin = nixpkgs-unstable.legacyPackages."aarch64-darwin";
     protocols = nixpkgs.lib.importJSON ./protocols.json;
     meta = nixpkgs.lib.importJSON ./meta.json;
@@ -37,9 +43,60 @@
       # we exclude optional development packages
       filter = path: _: !(builtins.elem (baseNameOf path) [ "octez-dev-deps.opam" "tezos-time-measurement.opam" ]);
     };
-    sources = { inherit tezos; inherit (inputs) opam-repository; };
 
-    ocaml-overlay = import ./nix/build/ocaml-overlay.nix (inputs // { inherit sources protocols meta; });
+    toolchain-version = pkgs-unstable.lib.strings.trim (builtins.readFile "${tezos}/rust-toolchain");
+
+    rust-toolchain = pkgs-unstable.rust-bin.stable.${toolchain-version}.default;
+
+    craneLib = (crane.mkLib pkgs-unstable).overrideToolchain (p: p.rust-bin.stable.${toolchain-version}.default);
+
+    opam-repository = pkgs.stdenv.mkDerivation {
+      name = "opam-repository";
+      src = inputs.opam-repository;
+      phases = [ "unpackPhase" "patchPhase" "installPhase" ];
+      patchPhase = ''
+        mkdir -p packages/octez-deps/octez-deps.dev
+        cp ${tezos}/opam/virtual/octez-deps.opam.locked packages/octez-deps/octez-deps.dev/opam
+
+        # This package adds some constraints to the solution found by the opam solver.
+        dummy_pkg=octez-dummy
+        dummy_opam_dir="packages/$dummy_pkg/$dummy_pkg.dev"
+        dummy_opam="$dummy_opam_dir/opam"
+        mkdir -p "$dummy_opam_dir"
+        echo 'opam-version: "2.0"' > "$dummy_opam"
+        echo "depends: [ \"ocaml\" { = \"$ocaml_version\" } ]" >> "$dummy_opam"
+        echo 'conflicts:[' >> "$dummy_opam"
+        grep -r "^flags: *\[ *avoid-version *\]" -l packages |
+          LC_COLLATE=C sort -u |
+          while read -r f; do
+            f=$(dirname "$f")
+            f=$(basename "$f")
+            p=$(echo "$f" | cut -d '.' -f '1')
+            v=$(echo "$f" | cut -d '.' -f '2-')
+            echo "\"$p\" {= \"$v\"}" >> $dummy_opam
+          done
+        # FIXME: https://gitlab.com/tezos/tezos/-/issues/5832
+        # opam unintentionally picks up a windows dependency. We add a
+        # conflict here to work around it.
+        echo '"ocamlbuild" {= "0.14.2+win" }' >> $dummy_opam
+        echo ']' >> "$dummy_opam"
+
+        OPAMSOLVERTIMEOUT=600 ${pkgs.opam}/bin/opam admin filter --yes --resolve \
+          "octez-deps,ocaml,ocaml-base-compiler,odoc<2.3.0,ledgerwallet-tezos,caqti-driver-postgresql,$dummy_pkg" \
+          --environment "os=linux,arch=x86_64,os-family=debian"
+
+        rm -rf packages/"$dummy_pkg" packages/octez-deps
+      '';
+
+      installPhase = ''
+        mkdir -p $out
+        cp -Lpr * $out
+      '';
+    };
+
+    sources = { inherit tezos opam-repository; };
+
+    ocaml-overlay = import ./nix/build/ocaml-overlay.nix (inputs // { inherit sources protocols meta craneLib rust-toolchain; });
   in pkgs-darwin.lib.recursiveUpdate
   {
       nixosModules = {
diff --git a/meta.json b/meta.json
index ff7389f0a..b3ae84869 100644
--- a/meta.json
+++ b/meta.json
@@ -1,5 +1,5 @@
 {
   "release": "1",
   "maintainer": "Serokell <hi@serokell.io>",
-  "tezos_ref": "octez-v20.3"
+  "tezos_ref": "octez-v21.0"
 }
diff --git a/nix/build/hacks.nix b/nix/build/hacks.nix
index 1dba67e6e..1f1e878dd 100644
--- a/nix/build/hacks.nix
+++ b/nix/build/hacks.nix
@@ -3,22 +3,6 @@
 
 # This file needs to become empty.
 self: super: rec {
-  # For some reason octez-protocol-compiler wants some docs to be present in octez libs
-  octez-libs = super.octez-libs.overrideAttrs (o: {
-    postFixup = ''
-      DUMMY_DOCS_DIR="$OCAMLFIND_DESTDIR/../doc/${o.pname}"
-      mkdir -p "$DUMMY_DOCS_DIR"
-      for doc in "README.md" "CHANGES.rst" "LICENSE"; do
-        touch "$DUMMY_DOCS_DIR/$doc"
-      done
-
-      DUMMY_ODOC_PAGES_DIR="$DUMMY_DOCS_DIR/odoc-pages"
-      mkdir -p "$DUMMY_ODOC_PAGES_DIR"
-      for doc in "tezos_workers.mld" "tezos_lwt_result_stdlib.mld" "index.mld"; do
-        touch "$DUMMY_ODOC_PAGES_DIR/$doc"
-      done
-    '';
-  });
   octez-proto-libs = super.octez-proto-libs.overrideAttrs (o: {
     postFixup = ''
       DUMMY_DOCS_DIR="$OCAMLFIND_DESTDIR/../doc/${o.pname}"
diff --git a/nix/build/ocaml-overlay.nix b/nix/build/ocaml-overlay.nix
index 97c5a732c..ef65f4bbd 100644
--- a/nix/build/ocaml-overlay.nix
+++ b/nix/build/ocaml-overlay.nix
@@ -1,7 +1,7 @@
 # SPDX-FileCopyrightText: 2021-2022 Oxhead Alpha
 # SPDX-License-Identifier: LicenseRef-MIT-OA
 
-{ sources, protocols, opam-nix, ... }:
+{ sources, protocols, opam-nix, craneLib, rust-toolchain, ... }:
 
 self: super:
 let
@@ -10,15 +10,11 @@ in
 with opam-nix.lib.${self.system}; let
   zcash-overlay = import ./zcash-overlay.nix;
   hacks = import ./hacks.nix;
-  octezSourcesResolved =
-    self.runCommand "resolve-octez-sources" {} ''
-      cp --no-preserve=all -Lr ${sources.tezos} $out
-    '';
   octezScope = buildOpamProject' {
     repos = with sources; [opam-repository];
     recursive = true;
-    resolveArgs = { };
-  } octezSourcesResolved { };
+    resolveArgs = {};
+  } sources.tezos {};
 in {
   octezPackages = (octezScope.overrideScope' (pkgs.lib.composeManyExtensions [
       (_: # Nullify all the ignored protocols so that we don't build them
@@ -31,19 +27,40 @@ in {
             pkg))
       hacks
       zcash-overlay
-      (final: prev: {
-        tezos-rust-libs = prev.tezos-rust-libs.overrideAttrs (drv: {
-          postInstall =
-            drv.postInstall + (let
-              rust-types-h = pkgs.fetchurl {
-                url = "https://gitlab.com/tezos/tezos-rust-libs/-/raw/v1.4/librustzcash/include/rust/types.h";
-                sha256 = "sha256-Q2lEV7JfPpFwfS/fcV7HDbBUSIGovasr7/bcANRuMZA=";
-              };
-            in ''
-              mkdir -p $out/include/rust
-              cp ${rust-types-h} $out/include/rust/types.h
-            '');
-        });
+      (final: prev:
+        let
+          vendored-deps =
+          let
+            src = sources.tezos;
+            commonArgs = {
+              inherit src;
+              buildInputs = [ pkgs.ocaml ];
+              cargoToml = "${src}/src/rust_deps/Cargo.toml";
+              cargoLock = "${src}/src/rust_deps/Cargo.lock";
+              postUnpack = ''
+                cd $sourceRoot/src/rust_deps
+                sourceRoot="."
+              '';
+              strictDeps = true;
+              OCAMLOPT = "${pkgs.ocaml}/bin/ocamlopt";
+              OCAML_WHERE_PATH = "ocaml";
+              OCTEZ_RUST_DEPS_NO_WASMER_HEADERS = true;
+            };
+          in craneLib.vendorCargoDeps commonArgs;
+
+          injectRustDeps = drv: {
+            buildInputs = drv.buildInputs ++ [
+              vendored-deps
+              rust-toolchain
+            ];
+            configurePhase = ''
+              export PATH="${rust-toolchain}/bin:$PATH"
+              cat ${vendored-deps}/config.toml >> ./src/rust_deps/.cargo/config.toml
+            '' + drv.configurePhase;
+          };
+        in {
+        octez-rust-deps = prev.octez-rust-deps.overrideAttrs injectRustDeps;
+        octez-l2-libs = prev.octez-l2-libs.overrideAttrs injectRustDeps;
       })
     ]));
 }
diff --git a/nix/modules/common.nix b/nix/modules/common.nix
index a2743503c..9877d2ba4 100644
--- a/nix/modules/common.nix
+++ b/nix/modules/common.nix
@@ -21,11 +21,11 @@ rec {
   daemonOptions = sharedOptions // {
 
     baseProtocols = mkOption {
-      type = types.listOf (types.enum [ "PtParisB" "PsParisC"]);
+      type = types.listOf (types.enum ["PsParisC" "PsquebeC"]);
       description = ''
         List of protocols for which daemons will be run.
       '';
-      example = ["PtParisB"];
+      example = ["PsParisC"];
     };
 
     rpcPort = mkOption {
diff --git a/nix/modules/tezos-accuser.nix b/nix/modules/tezos-accuser.nix
index bae2a513a..f153bc749 100644
--- a/nix/modules/tezos-accuser.nix
+++ b/nix/modules/tezos-accuser.nix
@@ -7,10 +7,10 @@ with lib;
 
 let
   octez-accuser-pkgs = {
-    "PtParisB" =
-      "${pkgs.octezPackages.octez-accuser-PtParisB}/bin/octez-accuser-PtParisB";
     "PsParisC" =
       "${pkgs.octezPackages.octez-accuser-PsParisC}/bin/octez-accuser-PsParisC";
+    "PsquebeC" =
+      "${pkgs.octezPackages.octez-accuser-PsquebeC}/bin/octez-baker-PsquebeC";
   };
   cfg = config.services.octez-accuser;
   common = import ./common.nix { inherit lib; inherit pkgs; };
diff --git a/nix/modules/tezos-baker.nix b/nix/modules/tezos-baker.nix
index 4bfb24f1f..87b8ae4f2 100644
--- a/nix/modules/tezos-baker.nix
+++ b/nix/modules/tezos-baker.nix
@@ -7,10 +7,10 @@ with lib;
 
 let
   octez-baker-pkgs = {
-    "PtParisB" =
-      "${pkgs.octezPackages.octez-baker-PtParisB}/bin/octez-baker-PtParisB";
     "PsParisC" =
-      "${pkgs.octezPackages.octez-baker-PtParisB}/bin/octez-baker-PsParisC";
+      "${pkgs.octezPackages.octez-baker-PsParisC}/bin/octez-baker-PsParisC";
+    "PsquebeC" =
+      "${pkgs.octezPackages.octez-baker-PsquebeC}/bin/octez-baker-PsParisC";
   };
   octez-client = "${pkgs.octezPackages.octez-client}/bin/octez-client";
   cfg = config.services.octez-baker;
diff --git a/protocols.json b/protocols.json
index fd3eb3d1f..2e35f5bba 100644
--- a/protocols.json
+++ b/protocols.json
@@ -25,11 +25,12 @@
     "PtKathma",
     "PtLimaPt",
     "PtMumbai",
-    "PtNairob"
+    "PtNairob",
+    "Proxford",
+    "PtParisB"
   ],
   "active": [
-    "Proxford",
-    "PtParisB",
-    "PsParisC"
+    "PsParisC",
+    "PsQuebec"
   ]
 }
diff --git a/scripts/build-all-bottles.sh b/scripts/build-all-bottles.sh
index a173ab81d..3e67f7fe1 100755
--- a/scripts/build-all-bottles.sh
+++ b/scripts/build-all-bottles.sh
@@ -19,7 +19,7 @@ set -euo pipefail
 retval="0"
 
 # we don't bottle meta-formulas that contain only services
-formulae=("tezos-smart-rollup-wasm-debugger" "tezos-smart-rollup-node" "tezos-dac-client" "tezos-dac-node" "tezos-dal-node" "tezos-signer" "tezos-codec" "tezos-client" "tezos-admin-client" "tezos-node" "tezos-accuser-PsParisC" "tezos-baker-PsParisC" "tezos-accuser-PtParisB" "tezos-baker-PtParisB" "tezos-accuser-Proxford" "tezos-baker-Proxford")
+formulae=("tezos-smart-rollup-wasm-debugger" "tezos-smart-rollup-node" "tezos-dac-client" "tezos-dac-node" "tezos-dal-node" "tezos-signer" "tezos-codec" "tezos-client" "tezos-admin-client" "tezos-node" "tezos-accuser-PsQuebec" "tezos-baker-PsQuebec" "tezos-accuser-PsParisC" "tezos-baker-PsParisC")
 
 # tezos-sapling-params is used as a dependency for some of the formulas
 # so we handle it separately.
diff --git a/scripts/update-tezos.sh b/scripts/update-tezos.sh
index 63fab2397..d83fc88c8 100755
--- a/scripts/update-tezos.sh
+++ b/scripts/update-tezos.sh
@@ -17,7 +17,7 @@ git clone https://gitlab.com/tezos/tezos.git upstream-repo
 cd upstream-repo
 latest_upstream_tag_hash="$(git rev-list --tags --max-count=1)"
 latest_upstream_tag="$(git describe --tags "$latest_upstream_tag_hash")"
-full_opam_repository_tag='' # will be set by version.sh
+opam_repository_tag='' # will be set by version.sh
 git checkout "$latest_upstream_tag"
 source scripts/version.sh
 # copying metadata from octez repo
@@ -43,7 +43,7 @@ if [[ "$latest_upstream_tag" != "$our_tezos_tag" ]]; then
     echo "Updating Tezos to $packaging_tag"
 
     ./scripts/update-input.py tezos "$latest_upstream_tag_hash"
-    ./scripts/update-input.py opam-repository "$full_opam_repository_tag"
+    ./scripts/update-input.py opam-repository "$opam_repository_tag"
     git commit -a -m "[Chore] Bump Tezos sources to $packaging_tag" --gpg-sign="tezos-packaging@serokell.io"
 
     ./scripts/update-brew-formulae.sh "$latest_upstream_tag" "$packaging_tag-1"
diff --git a/tests/tezos-binaries.nix b/tests/tezos-binaries.nix
index 1b5030231..2f395ed32 100644
--- a/tests/tezos-binaries.nix
+++ b/tests/tezos-binaries.nix
@@ -15,9 +15,9 @@ in import "${nixpkgs}/nixos/tests/make-test-python.nix" ({ ... }: {
 
   testScript = ''
     path_to_binaries = "${path-to-binaries}"
-    octez_accuser = f"{path_to_binaries}/octez-accuser-PtParisB"
+    octez_accuser = f"{path_to_binaries}/octez-accuser-PsParisC"
     octez_admin_client = f"{path_to_binaries}/octez-admin-client"
-    octez_baker = f"{path_to_binaries}/octez-baker-PtParisB"
+    octez_baker = f"{path_to_binaries}/octez-baker-PsParisC"
     octez_client = f"{path_to_binaries}/octez-client"
     octez_node = f"{path_to_binaries}/octez-node"
     octez_signer = f"{path_to_binaries}/octez-signer"
diff --git a/tests/tezos-modules.nix b/tests/tezos-modules.nix
index eef16e37f..440bcbb59 100644
--- a/tests/tezos-modules.nix
+++ b/tests/tezos-modules.nix
@@ -19,12 +19,12 @@ let
 
   octez-accuser = {
     enable = true;
-    baseProtocols = ["PtParisB"];
+    baseProtocols = ["PsParisC"];
   };
 
   octez-baker = {
     enable = true;
-    baseProtocols = ["PtParisB"];
+    baseProtocols = ["PsParisC"];
     bakerAccountAlias = "baker";
     bakerSecretKey = "unencrypted:edsk3KaTNj1d8Xd3kMBrZkJrfkqsz4XwwiBXatuuVgTdPye2KpE98o";
   };
diff --git a/tests/tezos-nix-binaries.nix b/tests/tezos-nix-binaries.nix
index bbc4366ae..d45f8d9a4 100644
--- a/tests/tezos-nix-binaries.nix
+++ b/tests/tezos-nix-binaries.nix
@@ -5,7 +5,7 @@ let
   inherit (pkgs) system;
   inherit (pkgs.octezPackages)
     octez-client octez-admin-client octez-node octez-signer octez-codec
-    octez-accuser-PtParisB octez-baker-PtParisB;
+    octez-accuser-PsParisC octez-baker-PsParisC;
 in import "${nixpkgs}/nixos/tests/make-test-python.nix" ({ ... }: {
   name = "tezos-nix-binaries-test";
   nodes.machine = { ... }: {
@@ -19,9 +19,9 @@ in import "${nixpkgs}/nixos/tests/make-test-python.nix" ({ ... }: {
   };
 
   testScript = ''
-    octez_accuser = "${octez-accuser-PtParisB}/bin/octez-accuser-PtParisB"
+    octez_accuser = "${octez-accuser-PsParisC}/bin/octez-accuser-PsParisC"
     octez_admin_client = "${octez-admin-client}/bin/octez-admin-client"
-    octez_baker = "${octez-baker-PtParisB}/bin/octez-baker-PtParisB"
+    octez_baker = "${octez-baker-PsParisC}/bin/octez-baker-PsParisC"
     octez_client = (
         "${octez-client}/bin/octez-client"
     )