diff --git a/README.md b/README.md
index dee74123..ee49b07e 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-[![CI](https://github.com/tj-actions/changed-files/actions/workflows/test.yml/badge.svg)](https://github.com/tj-actions/changed-files/actions/workflows/test.yml)
+[![CI](https://github.com/tj-actions/changed-files/actions/workflows/test.yml/badge.svg)](https://github.com/tj-actions/changed-files/actions/workflows/test.yml) [![Update release version.](https://github.com/tj-actions/changed-files/actions/workflows/sync-release-version.yml/badge.svg)](https://github.com/tj-actions/changed-files/actions/workflows/sync-release-version.yml)
 
 changed-files
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