diff --git a/src/stable-diffusion-streamlit/requirements.txt b/src/stable-diffusion-streamlit/requirements.txt
index 5673736..0a15349 100644
--- a/src/stable-diffusion-streamlit/requirements.txt
+++ b/src/stable-diffusion-streamlit/requirements.txt
@@ -6,4 +6,5 @@ streamlit-image-comparison==0.0.2
 transformers==4.22.2
 diffusers==0.3.0
 torch==1.10.0
-pandas==1.4.1
\ No newline at end of file
+pandas==1.4.1
+tornado>=6.5 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file