diff --git a/appveyor.yml b/appveyor.yml
index daec1440..d60b14bb 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,6 +1,6 @@
 # This config file is used by appveyor.com to build Windows release binaries
 
-version: 0.4.4-b{build}
+version: 0.5.dev0-b{build}
 
 branches:
   only:
diff --git a/docs/conf.py b/docs/conf.py
index 8d48dffb..3739429a 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -42,7 +42,7 @@
 
 # General information about the project.
 project = u'mwparserfromhell'
-copyright = u'2012, 2013, 2014, 2015, 2016 Ben Kurtovic'
+copyright = u'2012, 2013, 2014, 2015, 2016, 2017 Ben Kurtovic'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
diff --git a/mwparserfromhell/__init__.py b/mwparserfromhell/__init__.py
index 1d3c7d77..64f36817 100644
--- a/mwparserfromhell/__init__.py
+++ b/mwparserfromhell/__init__.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8  -*-
 #
-# Copyright (C) 2012-2016 Ben Kurtovic <ben.kurtovic@gmail.com>
+# Copyright (C) 2012-2017 Ben Kurtovic <ben.kurtovic@gmail.com>
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal
@@ -29,7 +29,7 @@
 __author__ = "Ben Kurtovic"
 __copyright__ = "Copyright (C) 2012, 2013, 2014, 2015, 2016 Ben Kurtovic"
 __license__ = "MIT License"
-__version__ = "0.4.4"
+__version__ = "0.5.dev0"
 __email__ = "ben.kurtovic@gmail.com"
 
 from . import (compat, definitions, nodes, parser, smart_list, string_mixin,