diff --git a/CHANGELOG.md b/CHANGELOG.md
index e573ad87..746731ca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,19 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.0.0] - 2022-09-19
+
+### Removed
+
+- [BREAKING] Remove support for Ruby 2.5.
+- [BREAKING] Remove support for passing `query`, `documents` or `file` as top-level parameters to `Client#search`.
+- Deprecate Client#search endpoint.
+- Deprecate Client#engines endpoints.
+
+### Added
+
+- Add Client#models endpoints to list and query available models.
+
 ## [1.5.0] - 2022-09-18
 
 ### Added
diff --git a/Gemfile.lock b/Gemfile.lock
index 2b819ed8..f6e11f91 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    ruby-openai (1.5.0)
+    ruby-openai (2.0.0)
       dotenv (>= 2.7.6, < 2.9.0)
       httparty (>= 0.18.1, < 0.21.0)
 
diff --git a/lib/ruby/openai/version.rb b/lib/ruby/openai/version.rb
index c7b6fe33..dd728d16 100644
--- a/lib/ruby/openai/version.rb
+++ b/lib/ruby/openai/version.rb
@@ -1,5 +1,5 @@
 module Ruby
   module OpenAI
-    VERSION = "1.5.0".freeze
+    VERSION = "2.0.0".freeze
   end
 end