diff --git a/CHANGELOG.md b/CHANGELOG.md
index 730cb17c6..c7cbf3be2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,20 @@ All notable changes to rtk (Rust Token Killer) 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).
 
+## [0.5.0](https://github.com/pszymkowiak/rtk/compare/v0.4.0...v0.5.0) (2026-01-30)
+
+
+### Features
+
+* add comprehensive claude code economics analysis ([ec1cf9a](https://github.com/pszymkowiak/rtk/commit/ec1cf9a56dd52565516823f55f99a205cfc04558))
+* comprehensive economics analysis and code quality improvements ([8e72e7a](https://github.com/pszymkowiak/rtk/commit/8e72e7a8b8ac7e94e9b13958d8b6b8e9bf630660))
+
+
+### Bug Fixes
+
+* comprehensive code quality improvements ([5b840cc](https://github.com/pszymkowiak/rtk/commit/5b840cca492ea32488d8c80fd50d3802a0c41c72))
+* optimize HashMap merge and add safety checks ([3b847f8](https://github.com/pszymkowiak/rtk/commit/3b847f863a90b2e9a9b7eb570f700a376bce8b22))
+
 ## [0.4.0](https://github.com/pszymkowiak/rtk/compare/v0.3.1...v0.4.0) (2026-01-30)
 
 
diff --git a/Cargo.lock b/Cargo.lock
index 919cf1093..7ff523979 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -581,7 +581,7 @@ checksum = "7a2d987857b319362043e95f5353c0535c1f58eec5336fdfcf626430af7def58"
 
 [[package]]
 name = "rtk"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "anyhow",
  "chrono",
diff --git a/Cargo.toml b/Cargo.toml
index e7d3a9551..f21b7e2d8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rtk"
-version = "0.4.0"
+version = "0.5.0"
 edition = "2021"
 authors = ["Patrick Szymkowiak"]
 description = "Rust Token Killer - High-performance CLI proxy to minimize LLM token consumption"