diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 7840fde..4fcfdf7 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.8.1"
+  ".": "1.9.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 03bdcad..986a7a4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [1.9.0](https://github.com/CodeBoarding/CodeBoarding-action/compare/v1.8.1...v1.9.0) (2026-07-28)
+
+
+### Features
+
+* **sync:** pull_request delivery strategy for protected branches ([#60](https://github.com/CodeBoarding/CodeBoarding-action/issues/60)) ([0540a47](https://github.com/CodeBoarding/CodeBoarding-action/commit/0540a47a6e243ece6b8c3de50bbafc749a392ce8))
+
 ## [1.8.1](https://github.com/CodeBoarding/CodeBoarding-action/compare/v1.8.0...v1.8.1) (2026-07-15)