diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 7a564723..a3906fc0 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "2.8.0"
+  ".": "2.9.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 215eb6a8..48bde26e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## [2.9.0](https://github.com/adcontextprotocol/adcp-client-python/compare/v2.8.0...v2.9.0) (2025-11-20)
+
+
+### Features
+
+* add missing AdCP protocol methods to CLI and client ([#71](https://github.com/adcontextprotocol/adcp-client-python/issues/71)) ([f9432a3](https://github.com/adcontextprotocol/adcp-client-python/commit/f9432a34d49ac250e7fb3c2d626cd889c4ef0e6c))
+* integrate AdCP schema improvements (PR [#222](https://github.com/adcontextprotocol/adcp-client-python/issues/222) + [#223](https://github.com/adcontextprotocol/adcp-client-python/issues/223)) ([#73](https://github.com/adcontextprotocol/adcp-client-python/issues/73)) ([d61ca33](https://github.com/adcontextprotocol/adcp-client-python/commit/d61ca33c68848ffa951e05b85c969cd6685f8fc6))
+
 ## [2.8.0](https://github.com/adcontextprotocol/adcp-client-python/compare/v2.7.0...v2.8.0) (2025-11-19)
 
 
diff --git a/pyproject.toml b/pyproject.toml
index e57003d6..12078805 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "adcp"
-version = "2.8.0"
+version = "2.9.0"
 description = "Official Python client for the Ad Context Protocol (AdCP)"
 authors = [
     {name = "AdCP Community", email = "maintainers@adcontextprotocol.org"}
diff --git a/src/adcp/__init__.py b/src/adcp/__init__.py
index d474fb56..fad10f25 100644
--- a/src/adcp/__init__.py
+++ b/src/adcp/__init__.py
@@ -179,7 +179,7 @@
     validate_publisher_properties_item,
 )
 
-__version__ = "2.8.0"
+__version__ = "2.9.0"
 
 __all__ = [
     # Client classes