diff --git a/CMakeLists.txt b/CMakeLists.txt
index 91ff838b3f475501a283b1d095cf6f71d7b505a2..d515f519707fc8d6257f2c2d0d38f392c1216cc7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,7 +9,7 @@ include(cmake/CheckAtomic.cmake)
 include(CTest)
 
 set (opendht_VERSION_MAJOR 3)
-set (opendht_VERSION_MINOR 1.8)
+set (opendht_VERSION_MINOR 1.9)
 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 3842588d2e49ec153fcee3d48772d7e67b11e3f5..da79eab4053246c6eb15f0f9fe0d0a76ec42bb54 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 dnl define macros
 m4_define([opendht_major_version], 3)
 m4_define([opendht_minor_version], 1)
-m4_define([opendht_patch_version], 8)
+m4_define([opendht_patch_version], 9)
 m4_define([opendht_version],
 		  [opendht_major_version.opendht_minor_version.opendht_patch_version])
 
diff --git a/meson.build b/meson.build
index 9639a002eca68ff21672bbe391f3593b29300f7f..cca49181fe904d2c690a58d35712478f350220d1 100644
--- a/meson.build
+++ b/meson.build
@@ -1,5 +1,5 @@
 project('opendht', 'c', 'cpp', 'cython',
-    version: '3.1.8',
+    version: '3.1.9',
     default_options: [
         'cpp_std=c++17',
         'warning_level=3'