diff --git a/.github/workflows/check-template.yml b/.github/workflows/check-template.yml
--- a/.github/workflows/check-template.yml
+++ b/.github/workflows/check-template.yml
@@ -9,7 +9,7 @@
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v5
-      - uses: cachix/install-nix-action@v31.7.0
+      - uses: cachix/install-nix-action@v31.8.0
       - name: Install just
         run: nix profile install nixpkgs#just
       - name: Lint justfile
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,7 +21,7 @@
     steps:
       - uses: actions/checkout@v5
 
-      - uses: cachix/install-nix-action@v31.7.0
+      - uses: cachix/install-nix-action@v31.8.0
         with:
           extra_nix_config: |
             accept-flake-config = true