diff --git a/CMakeLists.txt b/CMakeLists.txt
index fc26ee281..23ddde23a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 3.9)
 
 # Setup the XTB Project
 project(xtb
-  VERSION 6.3.3
+  VERSION 6.4.0
   LANGUAGES C Fortran
 )
 enable_testing()
diff --git a/meson.build b/meson.build
index 58d319279..81986f617 100644
--- a/meson.build
+++ b/meson.build
@@ -19,7 +19,7 @@
 project(
   'xtb',
   'fortran', 'c',
-  version: '6.3.3',
+  version: '6.4.0',
   license: 'LGPL3',
   meson_version: '>=0.51',
   default_options: [