diff --git a/.tangled/workflows/build.yml b/.tangled/workflows/build.yml
index 5616a59..b2ff30a 100644
--- a/.tangled/workflows/build.yml
+++ b/.tangled/workflows/build.yml
@@ -1,5 +1,8 @@
 when:
   - event: ["push", "manual"]
+    branch: ["main"]
+  - event: ["pull_request"]
+    branch: ["main"]
 
 engine: "nixery"