diff --git a/requirements/dev.txt b/requirements/dev.txt
index d23cb749..d09716bc 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -34,7 +34,7 @@ docutils==0.21.2
     # via
     #   -r docs.txt
     #   sphinx
-filelock==3.16.1
+filelock==3.20.1
     # via
     #   tox
     #   virtualenv