diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ee97657..1e8fa75 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -1,6 +1,11 @@
 name: Test
 on:
+  pull_request:
+    paths:
+      - '**/*.nix'
   push:
+    branches:
+      - master
     paths:
       - '**/*.nix'
   workflow_dispatch: