diff --git a/CMakeLists.txt b/CMakeLists.txt
index 41ee2c93a..dfff8939e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,8 +9,8 @@ endif()
 
 cmake_minimum_required (VERSION 3.11.0)
 
-project (TIGL VERSION 3.3.1)
-set(TIGL_VERSION 3.3.1)
+project (TIGL VERSION 3.4.0)
+set(TIGL_VERSION 3.4.0)
 
 # enable C++11 support
 set(CMAKE_CXX_STANDARD 11)