diff --git a/python-envs/requirementsSpherIndent.txt b/python-envs/requirementsSpherIndent.txt
index bf90efd..ef7da45 100644
--- a/python-envs/requirementsSpherIndent.txt
+++ b/python-envs/requirementsSpherIndent.txt
@@ -121,7 +121,7 @@ terminado==0.18.1
 threadpoolctl==3.6.0
 tinycss2==1.5.0
 tomli==2.3.0
-tornado==6.5.2
+tornado==6.5.5
 traitlets==5.14.3
 typing_extensions==4.15.0
 typing_utils==0.1.0