diff --git a/CMakeLists.txt b/CMakeLists.txt
index 933ba1f2..d9aff94d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.13)
-project(owgw VERSION 3.2.1)
+project(owgw VERSION 4.0.0)
 
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED True)