diff --git a/pkgs/development/python-modules/twine/default.nix b/pkgs/development/python-modules/twine/default.nix
index da5c4a9c3f51..f5809b0a9b90 100644
--- a/pkgs/development/python-modules/twine/default.nix
+++ b/pkgs/development/python-modules/twine/default.nix
@@ -14,12 +14,13 @@
 
 buildPythonPackage rec {
   pname = "twine";
-  version = "3.4.1";
+  version = "3.4.2";
+  format = "pyproject";
   disabled = pythonOlder "3.6";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "a56c985264b991dc8a8f4234eb80c5af87fa8080d0c224ad8f2cd05a2c22e83b";
+    sha256 = "4caec0f1ed78dc4c9b83ad537e453d03ce485725f2aea57f1bb3fdde78dae936";
   };
 
   nativeBuildInputs = [ setuptools-scm ];