diff --git a/pkgs/development/python-modules/maison/default.nix b/pkgs/development/python-modules/maison/default.nix
index 92061bc24b8d..03d4c5c05d87 100644
--- a/pkgs/development/python-modules/maison/default.nix
+++ b/pkgs/development/python-modules/maison/default.nix
@@ -12,13 +12,13 @@
 buildPythonPackage rec {
   pname = "maison";
   version = "1.4.1";
-  format = "pyproject";
+  pyproject = true;
 
   disabled = pythonOlder "3.7";
 
   src = fetchFromGitHub {
     owner = "dbatten5";
-    repo = pname;
+    repo = "maison";
     rev = "refs/tags/v${version}";
     hash = "sha256-uJW+7+cIt+jnbiC+HvT7KzyNk1enEtELTxtfc4eXAPU=";
   };