diff --git a/CMakeLists.txt b/CMakeLists.txt
index f81f0bad9..60aa5bcad 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required (VERSION 2.8.6)
 project (opendht)
 set (opendht_VERSION_MAJOR 0)
-set (opendht_VERSION_MINOR 6.3)
+set (opendht_VERSION_MINOR 6.4)
 set (opendht_VERSION ${opendht_VERSION_MAJOR}.${opendht_VERSION_MINOR})
 set (PACKAGE_VERSION ${opendht_VERSION})
 set (VERSION "${opendht_VERSION}")
diff --git a/configure.ac b/configure.ac
index 74035d95b..0785a3569 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 dnl define macros
 m4_define([opendht_major_version], 0)
 m4_define([opendht_minor_version], 6)
-m4_define([opendht_patch_version], 3)
+m4_define([opendht_patch_version], 4)
 m4_define([opendht_version],
 		  [opendht_major_version.opendht_minor_version.opendht_patch_version])