diff --git a/pkgs/development/python-modules/myst-nb/default.nix b/pkgs/development/python-modules/myst-nb/default.nix
index 6ede481fba8..33c06fc2461 100644
--- a/pkgs/development/python-modules/myst-nb/default.nix
+++ b/pkgs/development/python-modules/myst-nb/default.nix
@@ -22,7 +22,7 @@ buildPythonPackage rec {
   pname = "myst-nb";
   version = "0.17.2";
 
-  format = "flit";
+  format = "pyproject";
 
   disabled = pythonOlder "3.7";