diff --git a/src/CHANGELOG.txt b/src/CHANGELOG.txt
index e90d302..9a4aadf 100644
--- a/src/CHANGELOG.txt
+++ b/src/CHANGELOG.txt
@@ -1,3 +1,11 @@
+0.4.0
+-----
+
+* Breaks metadata compatibility with previous versions!
+* Add URL field for GitHub URL
+* Add Category field to categorise games/apps
+* Add file associations field to identify supported filetypes
+
 0.3.2
 -----
 
diff --git a/src/README.md b/src/README.md
index c0b5c64..cafdfd6 100644
--- a/src/README.md
+++ b/src/README.md
@@ -118,6 +118,14 @@ Supported formats:
 
 # Changelog
 
+0.4.0
+-----
+
+* Breaks metadata compatibility with previous versions!
+* Add URL field for GitHub URL
+* Add Category field to categorise games/apps
+* Add file associations field to identify supported filetypes
+
 0.3.2
 -----
 
diff --git a/src/setup.cfg b/src/setup.cfg
index 232ccb7..cebd6c4 100644
--- a/src/setup.cfg
+++ b/src/setup.cfg
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 [metadata]
 name = 32blit
-version = 0.3.2
+version = 0.4.0
 author = Philip Howard
 author_email = phil@pimoroni.com
 description = 32Blit asset preparation and upload tools
diff --git a/src/ttblit/__init__.py b/src/ttblit/__init__.py
index 8f4a662..6f77041 100644
--- a/src/ttblit/__init__.py
+++ b/src/ttblit/__init__.py
@@ -1,5 +1,5 @@
 
-__version__ = '0.3.2'
+__version__ = '0.4.0'
 
 import argparse
 import logging