diff --git a/nixos/doc/manual/release-notes/rl-2411.section.md b/nixos/doc/manual/release-notes/rl-2411.section.md
index 335618dbc48d..10f3ea319340 100644
--- a/nixos/doc/manual/release-notes/rl-2411.section.md
+++ b/nixos/doc/manual/release-notes/rl-2411.section.md
@@ -236,6 +236,8 @@
 
 - `knot-dns` has been updated to version 3.4.x. Check the [migration guide](https://www.knot-dns.cz/docs/latest/html/migration.html#upgrade-3-3-x-to-3-4-x) for breaking changes.
 
+- `mutmut` has been updated to version 3.0.5.
+
 - `services.kubernetes.kubelet.clusterDns` now accepts a list of DNS resolvers rather than a single string, bringing the module more in line with the upstream Kubelet configuration schema.
 
 - `bluemap` has changed the format used to store map tiles, and the database layout has been heavily modified. Upstream recommends a clean reinstallation: <https://github.com/BlueMap-Minecraft/BlueMap/releases/tag/v5.2>. Unless you are using an SQL storage backend, this should only entail deleting the contents of `config.services.bluemap.coreSettings.data` (defaults to `/var/lib/bluemap`) and `config.services.bluemap.webRoot` (defaults to `/var/lib/bluemap/web`).
diff --git a/pkgs/by-name/mu/mutmut/package.nix b/pkgs/by-name/mu/mutmut/package.nix
index 3d9c8078060c..70e131e53485 100644
--- a/pkgs/by-name/mu/mutmut/package.nix
+++ b/pkgs/by-name/mu/mutmut/package.nix
@@ -1,31 +1,35 @@
-{ lib
-, fetchFromGitHub
-, python3
-, testers
+{
+  lib,
+  fetchFromGitHub,
+  python3Packages,
 }:
 
-let self = with python3.pkgs; buildPythonApplication rec {
+python3Packages.buildPythonApplication rec {
   pname = "mutmut";
-  version = "2.2.0";
+  version = "3.2.0";
 
   src = fetchFromGitHub {
     repo = pname;
     owner = "boxed";
-    rev = version;
-    hash = "sha256-G+OL/9km2iUeZ1QCpU73CIWVWMexcs3r9RdCnAsESnY=";
+    rev = "refs/tags/${version}";
+    hash = "sha256-+e2FmfpGtK401IW8LNqeHk0v8Hh5rF3LbZJkSOJ3yPY=";
   };
 
   postPatch = ''
-    substituteInPlace requirements.txt --replace 'junit-xml==1.8' 'junit-xml==1.9'
+    substituteInPlace requirements.txt --replace-fail 'junit-xml==1.8' 'junit-xml==1.9'
   '';
 
-  disabled = pythonOlder "3.7";
+  disabled = python3Packages.pythonOlder "3.7";
 
   doCheck = false;
 
-  propagatedBuildInputs = [ click glob2 parso pony junit-xml ];
-
-  passthru.tests.version = testers.testVersion { package = self; };
+  propagatedBuildInputs = with python3Packages; [
+    click
+    parso
+    junit-xml
+    setproctitle
+    textual
+  ];
 
   meta = with lib; {
     description = "mutation testing system for Python, with a strong focus on ease of use";
@@ -33,7 +37,9 @@ let self = with python3.pkgs; buildPythonApplication rec {
     homepage = "https://github.com/boxed/mutmut";
     changelog = "https://github.com/boxed/mutmut/blob/${version}/HISTORY.rst";
     license = licenses.bsd3;
-    maintainers = with maintainers; [ synthetica ];
+    maintainers = with maintainers; [
+      l0b0
+      synthetica
+    ];
   };
-};
-in self
+}