diff --git a/SalishSeaTools/requirements.txt b/SalishSeaTools/requirements.txt
index f4f2d987..be5797b4 100644
--- a/SalishSeaTools/requirements.txt
+++ b/SalishSeaTools/requirements.txt
@@ -158,7 +158,7 @@ terminado==0.18.1
 tinycss2==1.4.0
 toml==0.10.2
 tomli==2.1.0
-tornado==6.4.1
+tornado==6.4.2
 tqdm==4.67.0
 traitlets==5.14.3
 types-python-dateutil==2.9.0.20241003