diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index bc0efe0996debf0da27ed1da66eaa6f07ae69e32..57eb234d7d8a67b7cc6907ff8bf4ef206f0dfdfa 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -40,7 +40,7 @@           - nixpkgs=channel:nixos-21.11
     runs-on: ubuntu-latest
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v2.4.0
     - name: Install nix
       uses: cachix/install-nix-action@v16
       with: