diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index d5a2c7632e717937308cdc6de08d08933ddbb7ef..5872b48efc776fc573c8086b1ebd3ef8224f42d0 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -1,4 +1,4 @@
-Changes in Release 2.2.x
+Changes in Release 2.3.0
 --------------------------------------------------------------------------------
 
  * Add AAindex databases (Kawashima et al., 2000)
diff --git a/CMakeLists.txt b/CMakeLists.txt
index ba6cfe36f4e204a17cc4bd53e33e9c55cf021599..c118d3d0a100c940124a48699f21918d43dc815a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -14,7 +14,7 @@ cmake_policy(SET CMP0060 NEW)
 project(OpenStructure CXX C)
 set (CMAKE_EXPORT_COMPILE_COMMANDS 1)
 set (OST_VERSION_MAJOR 2)
-set (OST_VERSION_MINOR 2)
+set (OST_VERSION_MINOR 3)
 set (OST_VERSION_PATCH 0)
 set (OST_VERSION_STRING ${OST_VERSION_MAJOR}.${OST_VERSION_MINOR}.${OST_VERSION_PATCH} )
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${PROJECT_SOURCE_DIR}/cmake_support)
diff --git a/docker/Dockerfile b/docker/Dockerfile
index ed7b8286f28749ab09d157bf5621664443257119..3b6c08868701ab8a050022007347331e76068adb 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -2,7 +2,7 @@ FROM ubuntu:20.04
 
 # ARGUMENTS
 ###########
-ARG OPENSTRUCTURE_VERSION="2.2.0"
+ARG OPENSTRUCTURE_VERSION="2.3.0"
 ARG SRC_FOLDER="/usr/local/src"
 ARG CPUS_FOR_MAKE=2
 ARG MSMS_VERSION="2.6.1"
diff --git a/singularity/Singularity b/singularity/Singularity
index c36ec32d9f843842586c5415375a47a6d4118a21..dd26e2a39ff55ef5417c5f215ffc0bdcc5775a69 100644
--- a/singularity/Singularity
+++ b/singularity/Singularity
@@ -1,5 +1,5 @@
 BootStrap: docker
-From: registry.scicore.unibas.ch/schwede/openstructure:2.2.0-focal
+From: registry.scicore.unibas.ch/schwede/openstructure:2.3.0-focal
 %post
 ##############################################################################
 # POST