diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 0a8763d..000a6c2 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -11,6 +11,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@V27
+      - uses: cachix/install-nix-action@v30
       - run: nix flake check
       - run: nix build -L
diff --git a/.github/workflows/deadnix.yaml b/.github/workflows/deadnix.yaml
index 670c8a6..5cfbe4e 100644
--- a/.github/workflows/deadnix.yaml
+++ b/.github/workflows/deadnix.yaml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@V27
+      - uses: cachix/install-nix-action@v30
       - uses: astro/deadnix-action@main
         with:
           flags: "-l"