diff --git a/pkgs/development/python-modules/nbsphinx/default.nix b/pkgs/development/python-modules/nbsphinx/default.nix
index 724cef323f27..060184fa2a7a 100644
--- a/pkgs/development/python-modules/nbsphinx/default.nix
+++ b/pkgs/development/python-modules/nbsphinx/default.nix
@@ -13,6 +13,7 @@
 buildPythonPackage rec {
   pname = "nbsphinx";
   version = "0.8.10";
+  format = "setuptools";
 
   src = fetchPypi {
     inherit pname version;