diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b2c295cb38732a5f8075fb7ea9f89d328f35612a..65475f7480eee54d9bb25bfb59ba192a4ddb0b1e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -40,7 +40,7 @@           - nixpkgs=channel:nixos-21.05
     runs-on: ubuntu-latest
     steps:
     - name: Checkout repository
-  push:
+      - master
 name: "Build and populate cache"
     - name: Install nix
       uses: cachix/install-nix-action@v14