diff --git a/pkgs/development/python-modules/setuptools-scm/tests.nix b/pkgs/development/python-modules/setuptools-scm/tests.nix
index b90797abf7e..c81323b27fa 100644
--- a/pkgs/development/python-modules/setuptools-scm/tests.nix
+++ b/pkgs/development/python-modules/setuptools-scm/tests.nix
@@ -10,6 +10,7 @@
 buildPythonPackage rec {
   pname = "setuptools-scm-tests";
   inherit (setuptools-scm) version;
+  format = "other";
 
   src = setuptools-scm.src;