diff --git a/.github/workflows/build_arm.yml b/.github/workflows/build_arm.yml
index 56200465b..56ba88669 100644
--- a/.github/workflows/build_arm.yml
+++ b/.github/workflows/build_arm.yml
@@ -1,11 +1,14 @@
 name: Build ARM
 
 on:
-  pull_request:
   push:
-  release:
-    types:
-      - created
+    paths:
+      - 'src'
+      - 'examples'
+      - 'lib'
+      - 'hw'
+  pull_request:
+    branches: [ master ]
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}