diff --git a/CMakeLists.txt b/CMakeLists.txt
index d0b3e008..e9a9ee48 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,7 +22,7 @@
 # cmake 3.12 have more better modern c++ support
 
 cmake_minimum_required(VERSION 3.12  FATAL_ERROR)
-project(nana VERSION      1.7.2
+project(nana VERSION      1.7.3
         DESCRIPTION "C++ GUI library"
         HOMEPAGE_URL http://nanapro.org
         LANGUAGES CXX         )