diff --git a/projects/cookiecutter/bugs/4/requirements.txt b/projects/cookiecutter/bugs/4/requirements.txt
index f695e148..1547f6d3 100644
--- a/projects/cookiecutter/bugs/4/requirements.txt
+++ b/projects/cookiecutter/bugs/4/requirements.txt
@@ -6,7 +6,7 @@ chardet==3.0.4
 click==7.1.2
 -e git+https://github.com/cookiecutter/cookiecutter@9568ab6ecd2d6836646006c59473c4a4ac0dee04#egg=cookiecutter
 distlib==0.3.0
-filelock==3.0.12
+filelock==3.20.1
 idna==2.9
 importlib-metadata==1.6.1
 importlib-resources==2.0.1