diff --git a/setup.py b/setup.py
index fe80350..a4a1e69 100644
--- a/setup.py
+++ b/setup.py
@@ -14,7 +14,7 @@ from setuptools import setup
 from codecs import open
 from os import path
 
-__version__ = "4.2.0"
+__version__ = "4.2.0k"
 description = "A Python package and CLI for parsing aggregate and " \
               "forensic DMARC reports"