diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index da70e1c9..3eb6a86e 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,12 @@
 Change Log
 ==========
 
+v2.3.1
+------
+
+You can now specify custom colours for RGB mode projected band structures. See the
+documentation for more details. The colormath package has been added as a dependency.
+
 v2.3.0
 ------
 
diff --git a/sumo/__init__.py b/sumo/__init__.py
index 7d726ac5..3bc26be5 100644
--- a/sumo/__init__.py
+++ b/sumo/__init__.py
@@ -5,4 +5,4 @@
 Sumo is a set of scripts and an API for dealing with VASP output files.
 """
 
-__version__ = "2.3.0"
+__version__ = "2.3.1"