diff --git a/components/example-notebook-servers/jupyter-tensorflow-full/requirements.txt b/components/example-notebook-servers/jupyter-tensorflow-full/requirements.txt
index 8d1a47dba67..419bebc90a0 100644
--- a/components/example-notebook-servers/jupyter-tensorflow-full/requirements.txt
+++ b/components/example-notebook-servers/jupyter-tensorflow-full/requirements.txt
@@ -17,3 +17,4 @@ scikit-learn==0.24.2
 scipy==1.7.0
 seaborn==0.11.1
 xgboost==1.4.2
+tornado>=6.4.2 # not directly required, pinned by Snyk to avoid a vulnerability