diff --git a/CHANGELOG.md b/CHANGELOG.md
index e25cb6b4102a3d7a96571bdc0ee62b47c37340dc..f2d7c2602cd4f359838a1fd06f1079975599273e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,8 @@ KleidiCV uses [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 This changelog aims to follow the guiding principles of
 [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
+## 0.6.0 - not yet released
+
 ## 0.5.0 - 2025-06-10
 
 ### Added
diff --git a/adapters/opencv/CMakeLists.txt b/adapters/opencv/CMakeLists.txt
index a7adb1c14ba2ab59480d2e9cb20e175ef3c5a893..bc0089074e32fec1d4cd0478d6fa6405a960525e 100644
--- a/adapters/opencv/CMakeLists.txt
+++ b/adapters/opencv/CMakeLists.txt
@@ -7,7 +7,7 @@ include("${CMAKE_CURRENT_LIST_DIR}/../../kleidicv_thread/CMakeLists.txt")
 
 project("KleidiCV OpenCV HAL")
 
-set(KLEIDICV_HAL_VERSION "0.5.0" CACHE INTERNAL "")
+set(KLEIDICV_HAL_VERSION "0.6.0" CACHE INTERNAL "")
 set(KLEIDICV_HAL_LIBRARIES "kleidicv_hal" "kleidicv" "kleidicv_thread" CACHE INTERNAL "")
 set(KLEIDICV_HAL_HEADERS "${CMAKE_CURRENT_LIST_DIR}/kleidicv_hal.h" CACHE INTERNAL "")
 set(KLEIDICV_HAL_INCLUDE_DIRS "$<TARGET_PROPERTY:kleidicv_thread,INCLUDE_DIRECTORIES>" CACHE INTERNAL "")