diff --git a/pkgs/development/python-modules/pymsgbox/default.nix b/pkgs/development/python-modules/pymsgbox/default.nix
index 4e38b9bb0690..238077376569 100644
--- a/pkgs/development/python-modules/pymsgbox/default.nix
+++ b/pkgs/development/python-modules/pymsgbox/default.nix
@@ -2,21 +2,24 @@
   lib,
   fetchPypi,
   buildPythonPackage,
+  setuptools,
   tkinter,
 }:
 
 buildPythonPackage rec {
   pname = "pymsgbox";
-  version = "1.0.9";
-  format = "setuptools";
+  version = "2.0.1";
+  pyproject = true;
 
   src = fetchPypi {
-    pname = "PyMsgBox";
+    pname = "pymsgbox";
     inherit version;
-    hash = "sha256-IZQifei/96PW2lQYSHBaFV3LsqBu4SDZ8oCh1/USY/8=";
+    hash = "sha256-mNBVxJpRHcwQ+gjDBD5xAtRo9eSzqDxtPGHfcix9eY0=";
   };
 
-  propagatedBuildInputs = [ tkinter ];
+  build-system = [ setuptools ];
+
+  dependencies = [ tkinter ];
 
   # Finding tests fails
   doCheck = false;