diff --git a/pkgs/development/python-modules/pymilter/default.nix b/pkgs/development/python-modules/pymilter/default.nix
index 32b7cfcc9bbcd..6f0c4291d4d50 100644
--- a/pkgs/development/python-modules/pymilter/default.nix
+++ b/pkgs/development/python-modules/pymilter/default.nix
@@ -1,42 +1,37 @@
 {
   lib,
-  python,
   buildPythonPackage,
   fetchFromGitHub,
-  fetchpatch,
   libmilter,
-  bsddb3,
+  berkeleydb,
   pydns,
   iana-etc,
   libredirect,
   pyasyncore,
+  setuptools,
 }:
 
 buildPythonPackage rec {
   pname = "pymilter";
-  version = "1.0.5";
-  format = "setuptools";
+  version = "1.0.6";
+  pyproject = true;
 
   src = fetchFromGitHub {
     owner = "sdgathman";
-    repo = pname;
-    rev = "${pname}-${version}";
-    hash = "sha256-gZUWEDVZfDRiOOdG3lpiQldHxm/93l8qYVOHOEpHhzQ=";
+    repo = "pymilter";
+    rev = "refs/tags/pymilter-${version}";
+    hash = "sha256-plaWXwDAIsVzEtrabZuZj7T4WNfz2ntQHgcMCVf5S70=";
   };
 
+  build-system = [
+    setuptools
+  ];
   buildInputs = [ libmilter ];
   nativeCheckInputs = [ pyasyncore ];
-  propagatedBuildInputs = [
-    bsddb3
+  dependencies = [
+    berkeleydb
     pydns
   ];
-  patches = [
-    (fetchpatch { # https://github.com/sdgathman/pymilter/pull/57
-      name = "Remove-calls-to-the-deprecated-method-assertEquals";
-      url = "https://github.com/sdgathman/pymilter/commit/1ead9028fc63ae3ec6ea3b0c438e6ed088a2b20e.patch";
-      hash = "sha256-/5LlDR15nMR3l7rkVjT3w4FbDTFAAgNdERWlPNL2TVg=";
-    })
-  ];
 
   preBuild = ''
     sed -i 's/import thread/import _thread as thread/' Milter/greylist.py