diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index caad7da3ff..e255652404 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -99,7 +99,7 @@ jobs:
     name: Loadtest (Nix)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v2.4.0
       - uses: cachix/install-nix-action@v13
       - uses: cachix/cachix-action@v10
         with: