diff --git a/setup.py b/setup.py
index 4ba9753..478fd02 100644
--- a/setup.py
+++ b/setup.py
@@ -25,7 +25,7 @@
       install_requires=['numpy',
                         'pillow',
                         'docopt',
-                        'tornado==4.5.3',
+                        'tornado==6.3.2',
                         'requests',
                         'h5py',
                         'python-socketio',