diff --git a/.github/workflows/format.yaml b/.github/workflows/format.yaml
index 5b5b6827..930dc1b5 100644
--- a/.github/workflows/format.yaml
+++ b/.github/workflows/format.yaml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@e50d5f73bfe71c2dd0aa4218de8f4afa59f8f81d # v16
+        uses: DeterminateSystems/nix-installer-action@786fff0690178f1234e4e1fe9b536e94f5433196 # v20
 
       - name: Checkout
         uses: actions/checkout@v4