diff --git a/setup.py b/setup.py
index ebc0737..bf0ca01 100644
--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@ def read(fname):
     return open(os.path.join(os.path.dirname(__file__), fname)).read()
 
 
-VERSION = '0.4.2'
+VERSION = '0.4.3'
 
 setup(
     name='carbon14',