diff --git a/CMakeLists.txt b/CMakeLists.txt
index 842ff8f..ef44d97 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.8)
 
-project(kima2 VERSION 1.5.0)
+project(kima2 VERSION 1.5.1)
 
 set(CMAKE_MODULE_PATH "${CMAKE_HOME_DIRECTORY}/cmake")
 
diff --git a/meson.build b/meson.build
index 61a111b..fe4c54b 100644
--- a/meson.build
+++ b/meson.build
@@ -1,4 +1,4 @@
-project('kima2', 'cpp', default_options : ['cpp_std=c++17'], version : '1.6.0')
+project('kima2', 'cpp', default_options : ['cpp_std=c++17'], version : '1.5.1')
 
 conf_data = configuration_data()
 conf_data.set('PROJECT_VERSION', '"' + meson.project_version() + '"')