diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index f21696b..5e41c70 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -17,7 +17,7 @@ jobs:
           - ubuntu-20.04
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: cachix/install-nix-action@v23
       - run: tests/run-tests.sh