diff --git a/docs/source/changelog.rst b/docs/source/changelog.rst
index 0fc6740..250a5ad 100644
--- a/docs/source/changelog.rst
+++ b/docs/source/changelog.rst
@@ -1,6 +1,15 @@
 Changelog
 =========
 
+0.5.0 (2016-05-03)
+++++++++++++++++++
+
+**Bugs**
+
+* `#36`_ Parameter `function_code` is missing in signature of routes.
+
+.. _#36: https://github.com/AdvancedClimateSystems/uModbus/issues/36
+
 0.4.2 (2016-04-07)
 ++++++++++++++++++
 
diff --git a/docs/source/conf.py b/docs/source/conf.py
index b670043..307b0a6 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -59,9 +59,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = '0.4'
+version = '0.5'
 # The full version, including alpha/beta/rc tags.
-release = '0.4.2'
+release = '0.5.0'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/setup.py b/setup.py
index 4d0420e..227a5c4 100755
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@
 long_description = open(os.path.join(cwd, 'README.rst'), 'r').read()
 
 setup(name='uModbus',
-      version='0.4.2',
+      version='0.5.0',
       author='Auke Willem Oosterhoff',
       author_email='oosterhoff@baopt.nl',
       description='Implementation of the Modbus protocol in pure Python.',