diff --git a/pkgs/development/python-modules/jupyter-book/default.nix b/pkgs/development/python-modules/jupyter-book/default.nix
index 81b89e77a8b..631a853833d 100644
--- a/pkgs/development/python-modules/jupyter-book/default.nix
+++ b/pkgs/development/python-modules/jupyter-book/default.nix
@@ -28,7 +28,7 @@ buildPythonPackage rec {
   pname = "jupyter-book";
   version = "0.15.1";
 
-  format = "flit";
+  format = "pyproject";
 
   disabled = pythonOlder "3.7";