diff --git a/cachalot/__init__.py b/cachalot/__init__.py
index e86b47d..c23f5d1 100644
--- a/cachalot/__init__.py
+++ b/cachalot/__init__.py
@@ -1,2 +1,2 @@
-__version__ = (0, 4, 1)
+__version__ = (0, 4, 1, 'post')
 version_string = '.'.join(str(n) for n in __version__)