diff --git a/requirements/py39-reqs/tests.txt b/requirements/py39-reqs/tests.txt
index 05d85dd3..78552dbc 100644
--- a/requirements/py39-reqs/tests.txt
+++ b/requirements/py39-reqs/tests.txt
@@ -70,7 +70,7 @@ elasticsearch==7.13.4
     # via
     #   -r requirements/py39-reqs/install.txt
     #   snafu (setup.cfg)
-filelock==3.4.2
+filelock==3.20.1
     # via
     #   tox
     #   virtualenv