diff --git a/.github/workflows/flake-update.yml b/.github/workflows/flake-update.yml
index b65671b..488ab44 100644
--- a/.github/workflows/flake-update.yml
+++ b/.github/workflows/flake-update.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3.6.0
+        uses: actions/checkout@v4.0.0
       - name: Install Nix
         uses: DeterminateSystems/nix-installer-action@v4
       - name: update