--- a/.github/workflows/polkadot-types.yml
+++ b/.github/workflows/polkadot-types.yml
@@ -3,10 +3,15 @@
 name: Polkadot types
 
 # Triger: only call from main workflow(re-usable workflows)
+# on:
+#   workflow_call:
+#   # Allows you to run this workflow manually from the Actions tab
+#   workflow_dispatch:
+
 on:
-  workflow_call:
-  # Allows you to run this workflow manually from the Actions tab
-  workflow_dispatch:
+  pull_request:
+    branches: [ 'develop' ]
+    types: [ opened, reopened, synchronize, ready_for_review, converted_to_draft ]
 
 
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel