diff --git a/CMakeLists.txt b/CMakeLists.txt
index b9ae890..55a3c60 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,7 +6,7 @@ set(SC_3D_CollisionDetectionHelpers_HEADERS "${CMAKE_CURRENT_SOURCE_DIR}/src/sc_
 
 add_library(SC_3D_CollisionDetectionHelpers ${SC_3D_CollisionDetectionHelpers_SOURCES})
 
-set_target_properties(SC_3D_CollisionDetectionHelpers PROPERTIES VERSION 2.2.0 SOVERSION 2)
+set_target_properties(SC_3D_CollisionDetectionHelpers PROPERTIES VERSION 2.2.1 SOVERSION 2)
 target_compile_features(SC_3D_CollisionDetectionHelpers PUBLIC cxx_std_20)
 
 if(NOT DEFINED CMAKE_BUILD_TYPE OR "${CMAKE_BUILD_TYPE}" STREQUAL "")
diff --git a/Changelog.md b/Changelog.md
index 9abdf54..e660681 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## Version 2.2.1
+
+Fix UnitTest for checking AABB.
+
 ## Version 2.2.0
 
 Refactoring of internally used function.