diff --git a/.github/workflows/check-json-schemas.yml b/.github/workflows/check-json-schemas.yml
index b2467d2..beab690 100644
--- a/.github/workflows/check-json-schemas.yml
+++ b/.github/workflows/check-json-schemas.yml
@@ -1,5 +1,7 @@
 name: Check JSON Schemas
-on: [push]
+on:
+  push:
+  pull_request:
 
 jobs:
   Check-JSON-Schemas: