diff --git a/2019/5-jupyter-azure-cognitive-services-face/requirements.txt b/2019/5-jupyter-azure-cognitive-services-face/requirements.txt
index 86b682f..195e057 100644
--- a/2019/5-jupyter-azure-cognitive-services-face/requirements.txt
+++ b/2019/5-jupyter-azure-cognitive-services-face/requirements.txt
@@ -58,7 +58,7 @@ six==1.12.0
 terminado==0.8.2
 testpath==0.4.2
 toml==0.10.0
-tornado==6.0.2
+tornado==6.3.2
 traitlets==4.3.2
 typed-ast==1.3.4
 urllib3==1.24.2