diff --git a/requirements-dev.txt b/requirements-dev.txt
index f35564a..17ecad8 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -436,7 +436,7 @@ tinycss2==1.3.0
     # via nbconvert
 toml==0.10.2
     # via streamlit
-tornado==6.4.1
+tornado==6.4.2
     # via
     #   jupyter-client
     #   streamlit
diff --git a/requirements.txt b/requirements.txt
index 3e06fe4..bfe1d5c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -225,7 +225,7 @@ threadpoolctl==3.5.0
     # via scikit-learn
 toml==0.10.2
     # via streamlit
-tornado==6.4.1
+tornado==6.4.2
     # via streamlit
 traitlets==5.14.3
     # via