diff --git a/etl/requirements-dev.txt b/etl/requirements-dev.txt
index b39fe9f..f6ac27d 100644
--- a/etl/requirements-dev.txt
+++ b/etl/requirements-dev.txt
@@ -4,6 +4,6 @@ csvs-to-sqlite==1.3
 ipython>=8.10.0 # not directly required, pinned by Snyk to avoid a vulnerability
 numpy>=1.22.2 # not directly required, pinned by Snyk to avoid a vulnerability
 setuptools>=65.5.1 # not directly required, pinned by Snyk to avoid a vulnerability
-tornado>=6.3.3 # not directly required, pinned by Snyk to avoid a vulnerability
+tornado>=6.4.2 # not directly required, pinned by Snyk to avoid a vulnerability
 pipdeptree==2.2.1
 urllib3>=2.2.2 # not directly required, pinned by Snyk to avoid a vulnerability