diff --git a/pkgs/development/python-modules/zdaemon/default.nix b/pkgs/development/python-modules/zdaemon/default.nix
index 5501429c8367..0fbf5b4607ff 100644
--- a/pkgs/development/python-modules/zdaemon/default.nix
+++ b/pkgs/development/python-modules/zdaemon/default.nix
@@ -44,5 +44,6 @@ buildPythonPackage rec {
     changelog = "https://github.com/zopefoundation/zdaemon/blob/${version}/CHANGES.rst";
     license = lib.licenses.zpl21;
     maintainers = [ ];
+    broken = true;
   };
 }