diff --git a/CHANGELOG.md b/CHANGELOG.md
index afed4929..607ebf1d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.19.0] - 2026-06-09
+
+### Added
+
+- Support Client ID Metadata Documents in OAuth client (#361)
+- Request `offline_access` scope when supported (#365)
+- Add `size` field to `MCP::Resource` per MCP specification (#393)
+
 ## [0.18.0] - 2026-05-30
 
 ### Added
diff --git a/lib/mcp/version.rb b/lib/mcp/version.rb
index eea2cb40..cb6585cd 100644
--- a/lib/mcp/version.rb
+++ b/lib/mcp/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module MCP
-  VERSION = "0.18.0"
+  VERSION = "0.19.0"
 end