diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 97e4f5b41702b3e83c48c6925e40c3e6561a47be..c79b72893fb50d9fc1c5a0305dd9321d11054808 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -35,7 +35,7 @@           - nixpkgs=channel:nixos-20.03
     runs-on: ubuntu-latest
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2.3.4
+      uses: actions/checkout@v2.3.3
     - name: Install nix
       uses: cachix/install-nix-action@v11
       with: