diff --git a/pkgs/by-name/pr/pretix/package.nix b/pkgs/by-name/pr/pretix/package.nix
index 7c72958dee31..117a5e877b7c 100644
--- a/pkgs/by-name/pr/pretix/package.nix
+++ b/pkgs/by-name/pr/pretix/package.nix
@@ -208,6 +208,7 @@ pythonPackages.buildPythonApplication (finalAttrs: {
     "cryptography"
     "django-bootstrap3"
     "django-compressor"
+    "django-countries"
     "django-filter"
     "django-formset-js-improved"
     "django-i18nfield"