diff --git a/CHANGELOG.md b/CHANGELOG.md
index cc80b4470c4a250c0058aac0852c6f4c9a768478..c9b821276f554f6fe5162c65b8e04bb5ffea4aa4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,22 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased] ##
+
+### Added ###
+
+### Changed ###
+
+### Deprecated ###
+
+### Removed ###
+
+### Fixed ###
+
+### Security ###
+
+### Documentation ###
+
 ## [0.9.0] - 2024-09-05 ##
 
 ### Added ###
diff --git a/setup.cfg b/setup.cfg
index 48f3974ffefcd6d09e10be029300781b00b3dc73..c26140b2fd70b37ca28644a0bf4310ed4de2e685 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = caoscrawler
-version = 0.9.0
+version = 0.9.1
 author = Alexander Schlemmer
 author_email = alexander.schlemmer@ds.mpg.de
 description = A new crawler for caosdb
diff --git a/src/doc/conf.py b/src/doc/conf.py
index fe244e8fa4bc4a2c17fc41c79c14f5a993c22bb9..3e08ee369a641fc18c585e483c7d60d9f8062c53 100644
--- a/src/doc/conf.py
+++ b/src/doc/conf.py
@@ -33,10 +33,10 @@ copyright = '2024, IndiScale'
 author = 'Alexander Schlemmer'
 
 # The short X.Y version
-version = '0.9.0'
+version = '0.9.1'
 # The full version, including alpha/beta/rc tags
 # release = '0.5.2-rc2'
-release = '0.9.0'
+release = '0.9.1-dev'
 
 
 # -- General configuration ---------------------------------------------------