diff --git a/pkgs/development/python-modules/dvc/default.nix b/pkgs/development/python-modules/dvc/default.nix
index 85c817f2f4fc..26ae7ec03de6 100644
--- a/pkgs/development/python-modules/dvc/default.nix
+++ b/pkgs/development/python-modules/dvc/default.nix
@@ -57,7 +57,7 @@
 
 buildPythonPackage rec {
   pname = "dvc";
-  version = "3.51.2";
+  version = "3.53.1";
   pyproject = true;
 
   disabled = pythonOlder "3.8";
@@ -66,7 +66,7 @@ buildPythonPackage rec {
     owner = "iterative";
     repo = "dvc";
     rev = "refs/tags/${version}";
-    hash = "sha256-MjzunpPWzGfa62Jr+krEdm+i+N10QNmW7qRWaU/58OM=";
+    hash = "sha256-YX65jAkM0LFFtKf+MX0w1BfhyR2Dzr5Vpwxl2jJ/GGw=";
   };
 
   pythonRelaxDeps = [
diff --git a/pkgs/development/python-modules/flufl/lock.nix b/pkgs/development/python-modules/flufl/lock.nix
index 8926badb3e63..3c1b2ce83efd 100644
--- a/pkgs/development/python-modules/flufl/lock.nix
+++ b/pkgs/development/python-modules/flufl/lock.nix
@@ -1,34 +1,36 @@
 {
   lib,
+  atpublic,
   buildPythonPackage,
   fetchPypi,
-  pytestCheckHook,
-  pythonOlder,
-  atpublic,
+  hatchling,
   psutil,
   pytest-cov,
+  pytestCheckHook,
+  pythonOlder,
   sybil,
-  pdm-pep517,
 }:
 
 buildPythonPackage rec {
   pname = "flufl-lock";
-  version = "7.1.1";
+  version = "8.1.0";
   pyproject = true;
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
-    pname = "flufl.lock";
+    pname = "flufl_lock";
     inherit version;
-    hash = "sha256-rxQXKzW7xYaHvQa3DRaT/Y1Iy/D/3n5RphjBSK4kBC0=";
+    hash = "sha256-2IMCAFaSpj2YtgCAFY+vCJvl7K5pafcGQJ2oJ2/c58s=";
   };
 
-  nativeBuildInputs = [ pdm-pep517 ];
-  propagatedBuildInputs = [
+  build-system = [ hatchling ];
+
+  dependencies = [
     atpublic
     psutil
   ];
+
   nativeCheckInputs = [
     pytestCheckHook
     pytest-cov
@@ -45,10 +47,10 @@ buildPythonPackage rec {
   pythonNamespaces = [ "flufl" ];
 
   meta = with lib; {
-    homepage = "https://flufllock.readthedocs.io/";
     description = "NFS-safe file locking with timeouts for POSIX and Windows";
+    homepage = "https://flufllock.readthedocs.io/";
     changelog = "https://gitlab.com/warsaw/flufl.lock/-/blob/${version}/docs/NEWS.rst";
-    maintainers = with maintainers; [ qyliss ];
     license = licenses.asl20;
+    maintainers = with maintainers; [ qyliss ];
   };
 }
diff --git a/pkgs/servers/mail/mailman/package.nix b/pkgs/servers/mail/mailman/package.nix
index 9a082040c96c..cbdbea48d09c 100644
--- a/pkgs/servers/mail/mailman/package.nix
+++ b/pkgs/servers/mail/mailman/package.nix
@@ -12,6 +12,8 @@ with python3.pkgs;
 buildPythonPackage rec {
   pname = "mailman";
   version = "3.3.9";
+  pyproject = true;
+
   disabled = pythonOlder "3.6";
 
   src = fetchPypi {
@@ -19,7 +21,11 @@ buildPythonPackage rec {
     hash = "sha256-GblXI6IwkLl+V1gEbMAe1baVyZOHMaYaYITXcTkp2Mo=";
   };
 
-  propagatedBuildInputs = with python3.pkgs; [
+  build-system = with python3.pkgs; [
+    setuptools
+  ];
+
+  dependencies = with python3.pkgs; [
     aiosmtpd
     alembic
     authheaders