diff --git a/pkgs/development/python-modules/clifford/default.nix b/pkgs/development/python-modules/clifford/default.nix
index 3226e3854c7..b26689cf38c 100644
--- a/pkgs/development/python-modules/clifford/default.nix
+++ b/pkgs/development/python-modules/clifford/default.nix
@@ -63,5 +63,7 @@ buildPythonPackage rec {
     homepage = "https://clifford.readthedocs.io";
     license = licenses.bsd3;
     maintainers = [ maintainers.costrouc ];
+    # many TypeError's in tests
+    broken = true;
   };
 }