diff --git a/.github/workflows/auto-tagging.yml b/.github/workflows/auto-tagging.yml
index dea7e7f..2805768 100644
--- a/.github/workflows/auto-tagging.yml
+++ b/.github/workflows/auto-tagging.yml
@@ -1,6 +1,8 @@
 name: Bump version
 on:
-  push:
+  pull_request:
+    types:
+      - closed
     branches:
       - master