diff --git a/pkgs/development/python-modules/nose2/default.nix b/pkgs/development/python-modules/nose2/default.nix
index 3ca80388a236..d63097f20a76 100644
--- a/pkgs/development/python-modules/nose2/default.nix
+++ b/pkgs/development/python-modules/nose2/default.nix
@@ -2,6 +2,7 @@
   lib,
   buildPythonPackage,
   fetchPypi,
+  fetchpatch,
 
   # build-system
   setuptools,
@@ -23,6 +24,15 @@ buildPythonPackage rec {
     hash = "sha256-NncPUZ31vs08v+C+5Ku/v5ufa0604DNh0oK378/E8N8=";
   };
 
+  patches = [
+    # Starting with Python 3.14, both `-X` and `--xxx` are surrounded
+    # by ANSI color codes in the argparse help text.
+    (fetchpatch {
+      url = "https://github.com/nose-devs/nose2/commit/2043fdfa264dc04e379e11c227e63a5704cb0185.patch";
+      hash = "sha256-OWzBInMI0ef9g0H3muka7J7FP01IZEFkuzJfaku78bI=";
+    })
+  ];
+
   build-system = [ setuptools ];
 
   optional-dependencies = {