diff --git a/.github/workflows/nixos.yml b/.github/workflows/nixos.yml
index f9e86df..9ca6290 100644
--- a/.github/workflows/nixos.yml
+++ b/.github/workflows/nixos.yml
@@ -1,5 +1,9 @@
 name: NixOS
 
+on:
+  push:
+    branches: [main]
+
 jobs:
   build:
     runs-on: ubuntu-18.04