diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 10f6b53..faed3de 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.3.2
+current_version = 0.4.0
 commit = True
 tag = True
 
diff --git a/setup.py b/setup.py
index 676ceb6..5e3a937 100644
--- a/setup.py
+++ b/setup.py
@@ -27,7 +27,7 @@ def read(*names, **kwargs):
 
 setup(
     name='axelrod-fortran',
-    version='0.3.2',
+    version='0.4.0',
     license='MIT license',
     description='Python wrapper for strategies originally written in Fortran',
     long_description='%s\n%s' % (
diff --git a/src/axelrod_fortran/__init__.py b/src/axelrod_fortran/__init__.py
index ca8a039..6016537 100644
--- a/src/axelrod_fortran/__init__.py
+++ b/src/axelrod_fortran/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "0.3.2"
+__version__ = "0.4.0"
 
 from .player import Player
 from .strategies import (all_strategies, characteristics,