diff --git a/CHANGELOG.md b/CHANGELOG.md
index 958933ba413af1b526e49b0fcacdaf2ffd7cf344..e3964052c3848bc93527708987d1b11007e13953 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 ###
+
 ## [0.15.0] - 2024-07-09 ##
 
 ### Added ###
diff --git a/setup.py b/setup.py
index 1a8a754219ddf84c0b9e088a13fd0283fa63a00f..7b499d91cdd6e52856320a9e573f0742e1d54e81 100755
--- a/setup.py
+++ b/setup.py
@@ -46,10 +46,10 @@ from setuptools import find_packages, setup
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ########################################################################
 
-ISRELEASED = True
+ISRELEASED = False
 MAJOR = 0
 MINOR = 15
-MICRO = 0
+MICRO = 1
 # Do not tag as pre-release until this commit
 # https://github.com/pypa/packaging/pull/515
 # has made it into a release. Probably we should wait for pypa/packaging>=21.4
diff --git a/src/doc/conf.py b/src/doc/conf.py
index 4a528d9e287daeeacd50e94cfba4e479b0430212..98e5b6c66e336c595c0feb6c1c47d5ac1db88a79 100644
--- a/src/doc/conf.py
+++ b/src/doc/conf.py
@@ -29,10 +29,10 @@ copyright = '2023, IndiScale GmbH'
 author = 'Daniel Hornung'
 
 # The short X.Y version
-version = '0.15.0'
+version = '0.15.1'
 # The full version, including alpha/beta/rc tags
 # release = '0.5.2-rc2'
-release = '0.15.0'
+release = '0.15.1-dev'
 
 
 # -- General configuration ---------------------------------------------------