diff --git a/examples/server/tornado/requirements.txt b/examples/server/tornado/requirements.txt
index dbc609e..4282676 100644
--- a/examples/server/tornado/requirements.txt
+++ b/examples/server/tornado/requirements.txt
@@ -1,3 +1,3 @@
-tornado==6.5.5
+tornado==6.5.6
 python-engineio
 six==1.10.0