diff --git a/gremlinpython.egg-info/requires.txt b/gremlinpython.egg-info/requires.txt
index fce4d0a..da26557 100644
--- a/gremlinpython.egg-info/requires.txt
+++ b/gremlinpython.egg-info/requires.txt
@@ -1,4 +1,4 @@
 aenum>=1.4.5
-tornado<5.0,>=4.4.1
+tornado>=4.4.1,<7.0
 six>=1.10.0
 isodate>=0.6.0
diff --git a/setup.py b/setup.py
index 400bcd2..22cd3dc 100644
--- a/setup.py
+++ b/setup.py
@@ -46,7 +46,7 @@
 
 install_requires = [
     'aenum>=1.4.5',
-    'tornado==5.0',
+    'tornado==6.3.3',
     'six>=1.10.0',
     'isodate>=0.6.0'
 ]