diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 7723ed4..89652a3 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "2.18.0"
+  ".": "2.19.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 32efef9..d86d6aa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## [2.19.0](https://github.com/adcontextprotocol/adcp-client-python/compare/v2.18.0...v2.19.0) (2026-01-14)
+
+
+### Features
+
+* fix PackageRequest schema inconsistency in adcp ([de2b4bf](https://github.com/adcontextprotocol/adcp-client-python/commit/de2b4bf144d2fc698410714cd0365eb99b427562))
+* sync schemas with ADCP 2.6 package updates ([a6c55db](https://github.com/adcontextprotocol/adcp-client-python/commit/a6c55dbe269010909a19fb0ef8cff4652d68aca0))
+
 ## [2.18.0](https://github.com/adcontextprotocol/adcp-client-python/compare/v2.17.0...v2.18.0) (2026-01-09)
 
 
diff --git a/pyproject.toml b/pyproject.toml
index 0323560..6ec182e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "adcp"
-version = "2.18.0"
+version = "2.19.0"
 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 15fb1a4..36a903f 100644
--- a/src/adcp/__init__.py
+++ b/src/adcp/__init__.py
@@ -197,7 +197,7 @@
     get_adcp_signed_headers_for_webhook,
 )
 
-__version__ = "2.18.0"
+__version__ = "2.19.0"
 
 
 def get_adcp_version() -> str: