diff --git a/.github/workflows/nix.yaml b/.github/workflows/nix.yaml
index 0bc2a92..fbf6548 100644
--- a/.github/workflows/nix.yaml
+++ b/.github/workflows/nix.yaml
@@ -2,6 +2,8 @@ name: "Nix build"
 on:
   pull_request:
   push:
+    branches:
+      - main
 jobs:
   tests:
     runs-on: ubuntu-latest