diff --git a/pkgs/by-name/pr/pretix/package.nix b/pkgs/by-name/pr/pretix/package.nix
index 53955e458589..4ce7fb727422 100644
--- a/pkgs/by-name/pr/pretix/package.nix
+++ b/pkgs/by-name/pr/pretix/package.nix
@@ -95,6 +95,7 @@ python.pkgs.buildPythonApplication rec {
 
   pythonRelaxDeps = [
     "importlib-metadata"
+    "kombu"
     "pillow"
     "protobuf"
     "python-bidi"