diff --git a/CMakeLists.txt b/CMakeLists.txt
index d4e3ab60c451e69da39baa42e38699a4233f0a1a..2042b1490684c08e908ddcd9b99e8e76e9436179 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,8 +5,8 @@
 cmake_minimum_required(VERSION 2.6.4 FATAL_ERROR)
 project(OpenStructure CXX C)
 set (OST_VERSION_MAJOR 1)
-set (OST_VERSION_MINOR 3)
-set (OST_VERSION_PATCH 3)
+set (OST_VERSION_MINOR 4)
+set (OST_VERSION_PATCH 0)
 set (OST_VERSION_STRING ${OST_VERSION_MAJOR}.${OST_VERSION_MINOR}.${OST_VERSION_PATCH} )
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${PROJECT_SOURCE_DIR}/cmake_support)
 include(OST)