diff --git a/setup.py b/setup.py
index 3085c87..3c68d26 100644
--- a/setup.py
+++ b/setup.py
@@ -23,7 +23,7 @@
 
 from setuptools import setup, find_packages
 
-VERSION_NUMBER = "4.1.0"
+VERSION_NUMBER = "4.2.0"
 
 GIT_BRANCH = subprocess.check_output(["git", "rev-parse", "--abbrev-ref", "HEAD"])
 GIT_BRANCH = GIT_BRANCH.decode()  # convert to standard string