diff --git a/pkgs/development/python-modules/dissect-volume/default.nix b/pkgs/development/python-modules/dissect-volume/default.nix
index 3cf3282c0b5b..1ef6ffb44998 100644
--- a/pkgs/development/python-modules/dissect-volume/default.nix
+++ b/pkgs/development/python-modules/dissect-volume/default.nix
@@ -12,9 +12,9 @@
 buildPythonPackage rec {
   pname = "dissect-volume";
   version = "3.7";
-  format = "pyproject";
+  pyproject = true;
 
-  disabled = pythonOlder "3.7";
+  disabled = pythonOlder "3.9";
 
   src = fetchFromGitHub {
     owner = "fox-it";