diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 5a428645..d3dae446 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -29,12 +29,9 @@
 name: Build
 
 on:
-  push:
-    branches-ignore:
-      - 'dependabot/**'
-  pull_request:
-    branches:
-      - 'main'
+  workflow_run:
+    workflows: [Publish to DockerHub]
+    types: [completed]
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || (github.repository == 'openthread/ot-efr32' && github.run_id) || github.ref }}