diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 022b2c1c..b6a033d9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -4,6 +4,9 @@ on:
   push:
     branches: 
       - '*'
+  pull_request:
+    branches:
+      - master
 jobs:
   lint:
     runs-on: ubuntu-18.04