diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index a2f086e..6da5cb4 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -1,6 +1,11 @@
 name: ci
 
-on: [ push, pull_request ]
+on:
+    push:
+        branches: [ "master" ]
+    pull_request:
+        branches: [ "master" ]
+    workflow_call:
 
 jobs:
   build: