diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 1e25815..b0683b1 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -24,6 +24,7 @@ jobs:
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
+      - uses: actions/checkout@v2
       - uses: cachix/install-nix-action@v13
         with:
           nix_path: nixpkgs=channel:nixos-unstable