diff --git a/Cargo.lock b/Cargo.lock
index 5381c01f..38ccbd1b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -141,7 +141,7 @@ checksum = "c7c24de15d275a1ecfd47a380fb4d5ec9bfe0933f309ed5e705b775596a3574d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.46",
+ "syn 2.0.82",
 ]
 
 [[package]]
@@ -152,7 +152,7 @@ checksum = "b9ccdd8f2a161be9bd5c023df56f1b2a0bd1d83872ae53b71a84a12c9bf6e842"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.46",
+ "syn 2.0.82",
 ]
 
 [[package]]
@@ -544,7 +544,7 @@ checksum = "83fdaf97f4804dcebfa5862639bc9ce4121e82140bec2a987ac5140294865b5b"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.46",
+ "syn 2.0.82",
 ]
 
 [[package]]
@@ -954,7 +954,7 @@ checksum = "87750cf4b7a4c0625b1529e4c543c2182106e4dedc60a2a6455e00d212c489ac"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.46",
+ "syn 2.0.82",
 ]
 
 [[package]]
@@ -1776,7 +1776,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8d3928fb5db768cb86f891ff014f0144589297e3c6a1aba6ed7cecfdace270c7"
 dependencies = [
  "proc-macro2",
- "syn 2.0.46",
+ "syn 2.0.82",
 ]
 
 [[package]]
@@ -1814,9 +1814,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.74"
+version = "1.0.89"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2de98502f212cfcea8d0bb305bd0f49d7ebdd75b64ba0a68f937d888f4e0d6db"
+checksum = "f139b0662de085916d1fb67d2b4169d1addddda1919e696f3252b740b629986e"
 dependencies = [
  "unicode-ident",
 ]
@@ -1848,7 +1848,7 @@ dependencies = [
  "prost",
  "prost-types",
  "regex",
- "syn 2.0.46",
+ "syn 2.0.82",
  "tempfile",
 ]
 
@@ -1862,7 +1862,7 @@ dependencies = [
  "itertools",
  "proc-macro2",
  "quote",
- "syn 2.0.46",
+ "syn 2.0.82",
 ]
 
 [[package]]
@@ -2230,22 +2230,22 @@ checksum = "58bc9567378fc7690d6b2addae4e60ac2eeea07becb2c64b9f218b53865cba2a"
 
 [[package]]
 name = "serde"
-version = "1.0.203"
+version = "1.0.213"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7253ab4de971e72fb7be983802300c30b5a7f0c2e56fab8abfc6a214307c0094"
+checksum = "3ea7893ff5e2466df8d720bb615088341b295f849602c6956047f8f80f0e9bc1"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.203"
+version = "1.0.213"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "500cbc0ebeb6f46627f50f3f5811ccf6bf00643be300b4c3eabc0ef55dc5b5ba"
+checksum = "7e85ad2009c50b58e87caa8cd6dac16bdf511bbfb7af6c33df902396aa480fa5"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.46",
+ "syn 2.0.82",
 ]
 
 [[package]]
@@ -2419,9 +2419,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.46"
+version = "2.0.82"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89456b690ff72fddcecf231caedbe615c59480c93358a93dfae7fc29e3ebbf0e"
+checksum = "83540f837a8afc019423a8edb95b52a8effe46957ee402287f4292fae35be021"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2736,7 +2736,7 @@ checksum = "693d596312e88961bc67d7f1f97af8a70227d9f90c31bba5806eec004978d752"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.46",
+ "syn 2.0.82",
 ]
 
 [[package]]
@@ -2826,7 +2826,7 @@ dependencies = [
  "prost-build",
  "prost-types",
  "quote",
- "syn 2.0.46",
+ "syn 2.0.82",
 ]
 
 [[package]]
diff --git a/core/Cargo.toml b/core/Cargo.toml
index c3aac295..dd9371e4 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -23,7 +23,7 @@ digest = "^0.10.7"
 hkdf = "^0.12.4"
 lazy_static = "^1.5"
 rand = "^0.8"
-serde = { version = "^1.0.203", features = ["derive"], optional = true }
+serde = { version = "^1.0.213", features = ["derive"], optional = true }
 serde_json = { version = "^1.0.120", optional = true }
 sha-1 = "^0.10.1"
 sha2 = "^0.10.8"
diff --git a/proto/Cargo.toml b/proto/Cargo.toml
index f708bc4d..739ed1fc 100644
--- a/proto/Cargo.toml
+++ b/proto/Cargo.toml
@@ -19,7 +19,7 @@ json = ["base64", "serde"]
 [dependencies]
 base64 = { version = "^0.22", optional = true }
 prost = "^0.13"
-serde = { version = "^1.0.203", features = ["derive"], optional = true }
+serde = { version = "^1.0.213", features = ["derive"], optional = true }
 
 [build-dependencies]
 prost-build = "^0.13"
diff --git a/tests/Cargo.toml b/tests/Cargo.toml
index 5e294e3b..c9c0d311 100644
--- a/tests/Cargo.toml
+++ b/tests/Cargo.toml
@@ -18,7 +18,7 @@ hex = "^0.4.3"
 p256 = { version = "^0.13.2", features = ["ecdsa", "pkcs8"] }
 rand = "^0.8"
 regex = "^1.10.5"
-serde = { version = "^1.0.203", features = ["derive"] }
+serde = { version = "^1.0.213", features = ["derive"] }
 serde_json = "^1.0.120"
 tink-core = { version = "^0.2", features = ["insecure", "json"] }
 tink-aead = "^0.2"