diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 582ca95..23cc704 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -1,8 +1,9 @@
 name: CI
 
 on:
-  - push
-  - pull_request
+  pull_request:
+  push:
+    branches: [async]
 
 jobs:
   coverage: