diff --git a/CMakeLists.txt b/CMakeLists.txt
index 188ade39134d121af61b5cc7c57b5390a2d6d2a2..1a18a56bbad17a10849128f43f72b5f7915b3953 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,7 +15,7 @@ project(OpenStructure CXX C)
 set (CMAKE_EXPORT_COMPILE_COMMANDS 1)
 set (OST_VERSION_MAJOR 2)
 set (OST_VERSION_MINOR 9)
-set (OST_VERSION_PATCH 0)
+set (OST_VERSION_PATCH 1)
 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)
 include(OST)
diff --git a/docker/Dockerfile b/docker/Dockerfile
index ec5a420b47cdf07e2c4821220cf84d78133eb73c..ca4aec689de471bf06e3860c25a79d7085baf5b4 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -2,7 +2,7 @@ FROM ubuntu:22.04
 
 # ARGUMENTS
 ###########
-ARG OPENSTRUCTURE_VERSION="2.9.0"
+ARG OPENSTRUCTURE_VERSION="2.9.1"
 ARG SRC_FOLDER="/usr/local/src"
 ARG CPUS_FOR_MAKE=2
 
diff --git a/singularity/Singularity b/singularity/Singularity
index 8ed1bb886168a62cb735a7528204265376e8b580..43b2fd13afc1618e25b11ef52c4716036d3dfdf4 100644
--- a/singularity/Singularity
+++ b/singularity/Singularity
@@ -1,5 +1,5 @@
 BootStrap: docker
-From: registry.scicore.unibas.ch/schwede/openstructure:2.9.0
+From: registry.scicore.unibas.ch/schwede/openstructure:2.9.1
 %post
 ##############################################################################
 # POST