diff --git a/pyproject.toml b/pyproject.toml
index d897495ca7..f433a48520 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -48,7 +48,7 @@ dependencies = [
   "django-hijack==3.3.*",
   "django-i18nfield==1.9.*,>=1.9.4",
   "django-libsass==0.9",
-  "django-localflavor==3.1",
+  "django-localflavor==4.0",
   "django-markup",
   "django-mysql",
   "django-oauth-toolkit==2.2.*",