diff --git a/CMakeLists.txt b/CMakeLists.txt
index ac7c2960..ab5c4c87 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,13 +6,15 @@
 cmake_minimum_required(VERSION 3.4.1...3.17.2)
 set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMake;${CMAKE_MODULE_PATH}")
 
-project(ixwebsocket LANGUAGES C CXX VERSION 11.4.4)
+project(ixwebsocket LANGUAGES C CXX VERSION 11.4.5)
 
 set (CMAKE_CXX_STANDARD 11)
 set (CXX_STANDARD_REQUIRED ON)
 set (CMAKE_CXX_EXTENSIONS OFF)
 set (CMAKE_EXPORT_COMPILE_COMMANDS yes)
 
+add_compile_definitions(IX_WEBSOCKET_VERSION="${CMAKE_PROJECT_VERSION}")
+
 option (BUILD_DEMO OFF)
 
 if (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
diff --git a/ixwebsocket/IXWebSocketVersion.h b/ixwebsocket/IXWebSocketVersion.h
index 741a392e..191c04b4 100644
--- a/ixwebsocket/IXWebSocketVersion.h
+++ b/ixwebsocket/IXWebSocketVersion.h
@@ -6,4 +6,6 @@
 
 #pragma once
 
-#define IX_WEBSOCKET_VERSION "11.4.4"
+#ifndef IX_WEBSOCKET_VERSION
+#define IX_WEBSOCKET_VERSION "unknown"
+#endif