diff --git a/attention-tutorial/requirements.txt b/attention-tutorial/requirements.txt
index ca30c6aa..64462707 100644
--- a/attention-tutorial/requirements.txt
+++ b/attention-tutorial/requirements.txt
@@ -59,7 +59,7 @@ tensorflow-tensorboard==1.5.0
 terminado==0.8.1
 testpath==0.3.1
 tflearn==0.3.2
-tornado==6.4.1
+tornado==6.5.1
 traitlets==4.3.2
 urllib3==1.26.18
 wcwidth==0.1.7