diff --git a/requirements.dev.txt b/requirements.dev.txt
index 0a3fc31..ecf9428 100644
--- a/requirements.dev.txt
+++ b/requirements.dev.txt
@@ -26,7 +26,7 @@ dill==0.3.4
     # via pylint
 distlib==0.3.4
     # via virtualenv
-filelock==3.6.0
+filelock==3.20.3
     # via virtualenv
 flake8==4.0.1
     # via -r requirements.dev.in