diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 7c29dc46..5c459ebf 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -13,7 +13,7 @@ jobs:
         - nixos
         - tux-nixos
     steps:
-    - uses: actions/checkout@v2.3.1
+    - uses: actions/checkout@v2.3.4
       with:
         fetch-depth: 0 # Nix Flakes doesn't work on shallow clones
     - uses: cachix/install-nix-action@v12