diff --git a/.github/workflows/gauntlet.yml b/.github/workflows/gauntlet.yml
index c2b7207ff..dea1c04a0 100644
--- a/.github/workflows/gauntlet.yml
+++ b/.github/workflows/gauntlet.yml
@@ -57,7 +57,7 @@ jobs:
     steps:
       - uses: actions/checkout@44c2b7a8a4ea60a981eaca3cf939b5f4305c123b # v4.1.5
       - name: Install Nix
-        uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
+        uses: cachix/install-nix-action@3715ab1a11cac9e991980d7b4a28d80c7ebdd8f9 # nix:v2.24.6
         with:
           nix_path: nixpkgs=channel:nixos-unstable
           extra_nix_config: "sandbox = false"
diff --git a/.github/workflows/golangci-lint.yml b/.github/workflows/golangci-lint.yml
index 772dc434e..c47f83c63 100644
--- a/.github/workflows/golangci-lint.yml
+++ b/.github/workflows/golangci-lint.yml
@@ -11,7 +11,7 @@ jobs:
       - name: Checkout sources
         uses: actions/checkout@44c2b7a8a4ea60a981eaca3cf939b5f4305c123b # v4.1.5
       - name: Install Nix
-        uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
+        uses: cachix/install-nix-action@3715ab1a11cac9e991980d7b4a28d80c7ebdd8f9 # nix:v2.24.6
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - name: golangci-lint
@@ -34,7 +34,7 @@ jobs:
       - name: Checkout sources
         uses: actions/checkout@44c2b7a8a4ea60a981eaca3cf939b5f4305c123b # v4.1.5
       - name: Install Nix
-        uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
+        uses: cachix/install-nix-action@3715ab1a11cac9e991980d7b4a28d80c7ebdd8f9 # nix:v2.24.6
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - name: golangci-lint
diff --git a/.github/workflows/nix-packages-test.yml b/.github/workflows/nix-packages-test.yml
index a1441ec09..5479deedc 100644
--- a/.github/workflows/nix-packages-test.yml
+++ b/.github/workflows/nix-packages-test.yml
@@ -11,7 +11,7 @@ jobs:
       - uses: actions/checkout@44c2b7a8a4ea60a981eaca3cf939b5f4305c123b # v4.1.5
 
       - name: Install Nix
-        uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
+        uses: cachix/install-nix-action@3715ab1a11cac9e991980d7b4a28d80c7ebdd8f9 # nix:v2.24.6
         with:
           nix_path: nixpkgs=channel:nixos-unstable
           extra_nix_config: "sandbox = false"