diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1375a7d397141205d656eb4d327e953a254a1436..175dc1b2a8f1a9ff3258e7ef03d8bb0640357918 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,22 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased] ##
+
+### Added ###
+
+### Changed ###
+
+### Deprecated ###
+
+### Removed ###
+
+### Fixed ###
+
+### Security ###
+
+### Documentation ###
+
 ## [0.13.0] - 2025-01-16 ##
 
 ### Added ###
diff --git a/setup.py b/setup.py
index d8d28e4d18e11e8f03819e20da3b1ab84aeb5df8..aa8ced3dde24399ee4652d978f011c8c0ccc01ef 100755
--- a/setup.py
+++ b/setup.py
@@ -47,9 +47,9 @@ from setuptools import find_packages, setup
 
 MAJOR = 0
 MINOR = 13
-MICRO = 0
+MICRO = 1
 PRE = ""  # e.g. rc0, alpha.1, 0.beta-23
-ISRELEASED = True
+ISRELEASED = False
 
 if PRE:
     VERSION = "{}.{}.{}-{}".format(MAJOR, MINOR, MICRO, PRE)
diff --git a/src/doc/conf.py b/src/doc/conf.py
index 12495069ff28f300ed1595f6617d37934151ada3..b9453e0ac8afde0fbccc2f80b92dc6dcb7d3576f 100644
--- a/src/doc/conf.py
+++ b/src/doc/conf.py
@@ -27,9 +27,9 @@ copyright = '2025, IndiScale GmbH'
 author = 'Daniel Hornung'
 
 # The short X.Y version
-version = '0.13.0'
+version = '0.13.1'
 # The full version, including alpha/beta/rc tags
-release = '0.13.0'
+release = '0.13.1-dev'
 
 
 # -- General configuration ---------------------------------------------------