diff --git a/tests/python3-libraries/requirements.txt b/tests/python3-libraries/requirements.txt
index 23175a06..59b0f8f1 100644
--- a/tests/python3-libraries/requirements.txt
+++ b/tests/python3-libraries/requirements.txt
@@ -172,7 +172,7 @@ stevedore==1.29.0
 testrepository==0.0.20
 testtools==2.3.0
 thrift==0.11.0
-tornado==6.3.3
+tornado==6.4.2
 tox==3.2.1
 twisted==18.7.0
 ujson==1.35