diff --git a/samples/bookinfo/src/productpage/requirements.txt b/samples/bookinfo/src/productpage/requirements.txt
index 5e5ddf224f9..6f13551e2f0 100644
--- a/samples/bookinfo/src/productpage/requirements.txt
+++ b/samples/bookinfo/src/productpage/requirements.txt
@@ -25,7 +25,7 @@ simplejson==3.16.0
 six==1.12.0
 threadloop==1.0.2
 thrift==0.11.0
-tornado==5.1
+tornado==6.4.1
 urllib3==1.26.5
 visitor==0.1.3
 Werkzeug==2.2.3