diff --git a/.github/workflows/validate-json-schema.yml b/.github/workflows/validate-json-schema.yml
index 6ac19e202..5e4d71dfc 100644
--- a/.github/workflows/validate-json-schema.yml
+++ b/.github/workflows/validate-json-schema.yml
@@ -1,6 +1,12 @@
 name: Validate JSON Schema
 
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
 
 jobs:
   validate-json: