diff --git a/pkgs/by-name/pr/pretix/package.nix b/pkgs/by-name/pr/pretix/package.nix
index 715167c9f029..73ff0002ac9a 100644
--- a/pkgs/by-name/pr/pretix/package.nix
+++ b/pkgs/by-name/pr/pretix/package.nix
@@ -85,6 +85,7 @@ python.pkgs.buildPythonApplication rec {
     "celery"
     "css-inline"
     "django-bootstrap3"
+    "django-compressor"
     "django-formset-js-improved"
     "django-i18nfield"
     "django-localflavor"