diff --git a/pip-sample/testing_requirements.txt b/pip-sample/testing_requirements.txt
index 2491f62d..0bd78e2a 100644
--- a/pip-sample/testing_requirements.txt
+++ b/pip-sample/testing_requirements.txt
@@ -55,7 +55,7 @@ simplegeneric==0.8.1
 six==1.11.0
 terminado==0.8.1
 testpath==0.4.1
-tornado==5.1.1
+tornado==6.4.1
 traitlets==4.3.2
 tweepy==3.6.0
 urllib3==1.26.5