diff --git a/repositories/tornado_refactor/requirements.txt b/repositories/tornado_refactor/requirements.txt
index bfc1433e..d963de18 100644
--- a/repositories/tornado_refactor/requirements.txt
+++ b/repositories/tornado_refactor/requirements.txt
@@ -32,7 +32,7 @@ docutils==0.20.1
     # via
     #   sphinx
     #   sphinx-rtd-theme
-filelock==3.14.0
+filelock==3.20.1
     # via
     #   tox
     #   virtualenv