diff --git a/demo/requirements.txt b/demo/requirements.txt
index 54005d8..081a8ac 100644
--- a/demo/requirements.txt
+++ b/demo/requirements.txt
@@ -1,2 +1,2 @@
-tornado==2.3
+tornado==6.3.3
 ..
diff --git a/requirements-py27.txt b/requirements-py27.txt
index fb7c243..e253f56 100644
--- a/requirements-py27.txt
+++ b/requirements-py27.txt
@@ -1,2 +1,2 @@
-tornado<6.0
+tornado<7.0
 six