diff --git a/pkgs/by-name/pr/pretix/package.nix b/pkgs/by-name/pr/pretix/package.nix
index 9c735d4dd548..0b77b9e562ed 100644
--- a/pkgs/by-name/pr/pretix/package.nix
+++ b/pkgs/by-name/pr/pretix/package.nix
@@ -82,6 +82,7 @@ python.pkgs.buildPythonApplication rec {
     "beautifulsoup4"
     "celery"
     "django-bootstrap3"
+    "django-localflavor"
     "django-phonenumber-field"
     "dnspython"
     "drf_ujson2"