diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index d311c30d..806d6269 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "6.3.0-beta.4"
+  ".": "6.3.0-beta.5"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d734a5d7..68231c3e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## [6.3.0-beta.5](https://github.com/adcontextprotocol/adcp-client-python/compare/v6.3.0-beta.4...v6.3.0-beta.5) (2026-05-26)
+
+
+### Continuous Integration
+
+* fix release-please manifest tag handling ([#879](https://github.com/adcontextprotocol/adcp-client-python/issues/879)) ([f3aeb78](https://github.com/adcontextprotocol/adcp-client-python/commit/f3aeb780e7666a42d4acb17f0af4d722983a93cb))
+* use release-please manifest prerelease config ([#877](https://github.com/adcontextprotocol/adcp-client-python/issues/877)) ([8f93226](https://github.com/adcontextprotocol/adcp-client-python/commit/8f93226a02d799c12805c9a0215eff1f9d084caf))
+
 ## [6.3.0-beta.4](https://github.com/adcontextprotocol/adcp-client-python/compare/v6.2.0-beta.4...v6.3.0-beta.4) (2026-05-26)
 
 
diff --git a/pyproject.toml b/pyproject.toml
index bb258c79..4f3e73b5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "adcp"
-version = "6.3.0b4"
+version = "6.3.0b5"
 description = "Official Python client for the Ad Context Protocol (AdCP)"
 authors = [
     {name = "AdCP Community", email = "maintainers@adcontextprotocol.org"}