bumped to version 6.20.0
diff --git a/setup.py b/setup.py
index 8717765..b680511 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,7 @@
 from setuptools import setup, find_packages
 from pip.req import parse_requirements
 
-version = "6.19.0"
+version = "6.20.0"
 requirements = parse_requirements("requirements.txt", session="")
 
 setup(