diff --git a/CMakeLists.txt b/CMakeLists.txt
index 52daba7..c5f27d9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,7 @@
 # 3.13+ for target_link_directories
 cmake_minimum_required(VERSION 3.13 FATAL_ERROR)
 
-project(perfect LANGUAGES CXX VERSION 0.4.0)
+project(perfect LANGUAGES CXX VERSION 0.5.0)
 message(STATUS "Build type: " ${CMAKE_BUILD_TYPE})
 
 include(CheckLanguage)
diff --git a/README.md b/README.md
index 1f10eb7..611cfa6 100644
--- a/README.md
+++ b/README.md
@@ -190,6 +190,12 @@ See [examples/cpu_cache.cpp](examples/cpu_cache.cpp).
 
 ## Changelog
 
+* v0.5.0
+    * add tools/stress
+    * add tools/max-os-perf
+    * add tools/min-os-perf
+    * add tools/enable-cpu-turbo
+    * add tools/disable-cpu-turbo
 * v0.4.0
     * Add ASLR interface
     * Disambiguate some filesystem errors