diff --git a/pkgs/development/python-modules/jsonschema/default.nix b/pkgs/development/python-modules/jsonschema/default.nix
index d7a1bd0e06ff..a01bfb6806ef 100644
--- a/pkgs/development/python-modules/jsonschema/default.nix
+++ b/pkgs/development/python-modules/jsonschema/default.nix
@@ -14,6 +14,7 @@
 buildPythonPackage rec {
   pname = "jsonschema";
   version = "4.4.0";
+  format = "pyproject";
 
   src = fetchPypi {
     inherit pname version;