diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 99aacb6..4ba8934 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -25,7 +25,7 @@ jobs:
           persist-credentials: false
 
       - name: Install Nix
-        uses: cachix/install-nix-action@616559265b40713947b9c190a8ff4b507b5df49b # https://github.com/cachix/install-nix-action/releases/tag/v31.10.4
+        uses: cachix/install-nix-action@ab739621df7a23f52766f9ccc97f38da6b7af14f # https://github.com/cachix/install-nix-action/releases/tag/v31.10.5
         with:
           nix_path: nixpkgs=channel:nixos-25.11
 
diff --git a/.github/workflows/release-entry.yaml b/.github/workflows/release-entry.yaml
index 5e8012d..727664e 100644
--- a/.github/workflows/release-entry.yaml
+++ b/.github/workflows/release-entry.yaml
@@ -32,7 +32,7 @@ jobs:
           fetch-tags: true
 
       - name: Install Nix
-        uses: cachix/install-nix-action@616559265b40713947b9c190a8ff4b507b5df49b # https://github.com/cachix/install-nix-action/releases/tag/v31.10.4
+        uses: cachix/install-nix-action@ab739621df7a23f52766f9ccc97f38da6b7af14f # https://github.com/cachix/install-nix-action/releases/tag/v31.10.5
         with:
           nix_path: nixpkgs=channel:nixos-25.11