diff --git a/rtg/__init__.py b/rtg/__init__.py
index 05d2ec5..3729c0c 100644
--- a/rtg/__init__.py
+++ b/rtg/__init__.py
@@ -1,4 +1,4 @@
-__version__ = '0.4.1'
+__version__ = '0.4.2'
 
 import os
 import logging