diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..4971a7d
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,21 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+## [0.3.0] - 2023-12-06
+
+### Added
+
+- Generate types and api calls with openapi generator.
+- Version constant instead of parsing gemspec.
+
+
+### Deprecate
+
+- `user.signout()` -> `auth.revoke_user_refresh_tokens()`
+- `auth.authenticate_request()` -> `auth.validate_jwt()`
+
+
+### Possible Breaking Changes
+
+- Type names may change.
diff --git a/lib/passageidentity/user_api.rb b/lib/passageidentity/user_api.rb
index 688f9cd..2ad5b73 100644
--- a/lib/passageidentity/user_api.rb
+++ b/lib/passageidentity/user_api.rb
@@ -11,7 +11,7 @@ def initialize(app_id, api_key)
 
       gemspec = File.join(__dir__, "../../passageidentity.gemspec")
       spec = Gem::Specification.load(gemspec)
-      header_params = { "Passage-Version" => "passage-ruby #{spec.version}" }
+      header_params = { "Passage-Version" => "passage-ruby #{Passage::VERSION}"}
       header_params["Authorization"] = "Bearer #{@api_key}" if @api_key != ""
       
       @req_opts = {}
diff --git a/lib/passageidentity/version.rb b/lib/passageidentity/version.rb
index 21927ee..ea35d8f 100644
--- a/lib/passageidentity/version.rb
+++ b/lib/passageidentity/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Passage
-  VERSION = '0.2.3'
+  VERSION = '0.3.0'
 end