diff --git a/.github/workflows/flake-check.yml b/.github/workflows/flake-check.yml
index 03cf95e..68b9de6 100644
--- a/.github/workflows/flake-check.yml
+++ b/.github/workflows/flake-check.yml
@@ -7,7 +7,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v27
+    - uses: cachix/install-nix-action@v30
       with:
         github_access_token: ${{ secrets.GITHUB_TOKEN }}
     - run: nix flake check
+    - run: nix fmt