diff --git a/setup.py b/setup.py
index 210cc9ed0..3c3761c86 100755
--- a/setup.py
+++ b/setup.py
@@ -8,7 +8,7 @@ from io import open
 from setuptools import find_packages, setup
 
 CURRENT_PYTHON = sys.version_info[:2]
-REQUIRED_PYTHON = (3, 5)
+REQUIRED_PYTHON = (3, 6)
 
 # This check and everything above must remain compatible with Python 2.7.
 if CURRENT_PYTHON < REQUIRED_PYTHON: