diff --git a/setup.py b/setup.py
index c1c7b01..ecc4702 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,7 @@
 from setuptools import setup, find_packages
 
 
-install_requires = ['tornado==4.1',
+install_requires = ['tornado==6.3.3',
                     'requests']