diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c881fe3..da6c11c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -33,7 +33,7 @@ jobs:
           persist-credentials: false
 
       - name: Install Nix
-        uses: cachix/install-nix-action@17fe5fb4a23ad6cbbe47d6b3f359611ad276644c # ratchet:cachix/install-nix-action@v31
+        uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # ratchet:cachix/install-nix-action@v31
 
       - name: Build
         run: nix build -L --show-trace .#${{ matrix.attr }}
diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 3045546..bbfebdf 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -24,7 +24,7 @@ jobs:
           persist-credentials: false
 
       - name: Install Nix
-        uses: cachix/install-nix-action@17fe5fb4a23ad6cbbe47d6b3f359611ad276644c # ratchet:cachix/install-nix-action@v31
+        uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # ratchet:cachix/install-nix-action@v31
 
       - name: Check
         run: nix build --print-build-logs '.#checks.x86_64-linux.nixfmt'
@@ -39,7 +39,7 @@ jobs:
           persist-credentials: false
 
       - name: Install Nix
-        uses: cachix/install-nix-action@17fe5fb4a23ad6cbbe47d6b3f359611ad276644c # ratchet:cachix/install-nix-action@v31
+        uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # ratchet:cachix/install-nix-action@v31
 
       - name: Check
         run: nix build --print-build-logs '.#checks.x86_64-linux.reuse'