diff --git a/CHANGES.rst b/CHANGES.rst
index 9b44353..b7c0b48 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -18,6 +18,11 @@
 Changes
 =======
 
+`0.5.1 <https://github.com/SwissDataScienceCenter/renku-sphinx-theme/compare/v0.5.0...v0.5.1>`__ (2025-12-09)
+-------------------------------------------------------------------------------------------------------------
+
+This release allows the ``renku-sphinx-theme`` to be installed with ``sphinx>=9``.
+
 `0.5.0 <https://github.com/SwissDataScienceCenter/renku-sphinx-theme/compare/v0.4.0...v0.5.0>`__ (2025-01-24)
 -------------------------------------------------------------------------------------------------------------
 
diff --git a/renku_sphinx_theme/version.py b/renku_sphinx_theme/version.py
index 34259f8..d8b3fb6 100644
--- a/renku_sphinx_theme/version.py
+++ b/renku_sphinx_theme/version.py
@@ -24,4 +24,4 @@
 
 from __future__ import absolute_import, print_function
 
-__version__ = '0.5.0'
+__version__ = '0.5.1'