diff --git a/pkgs/development/python-modules/txi2p-tahoe/default.nix b/pkgs/development/python-modules/txi2p-tahoe/default.nix
index fe85d03a3da9..5ad109de1e41 100644
--- a/pkgs/development/python-modules/txi2p-tahoe/default.nix
+++ b/pkgs/development/python-modules/txi2p-tahoe/default.nix
@@ -2,17 +2,17 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+  pythonAtLeast,
   setuptools,
   setuptools-scm,
   parsley,
-  twisted,
   python,
+  twisted,
 }:
 
 buildPythonPackage rec {
   pname = "txi2p-tahoe";
   version = "0.3.7";
-
   pyproject = true;
 
   src = fetchFromGitHub {
@@ -22,6 +22,10 @@ buildPythonPackage rec {
     hash = "sha256-u/IOhxK9jWC/tTKKLsc4PexbCuki+yEtMNw7LuQKmuk=";
   };
 
+  # 194/263 tests fail on python 3.14
+  # https://github.com/tahoe-lafs/txi2p/issues/10
+  disabled = pythonAtLeast "3.14";
+
   nativeBuildInputs = [
     setuptools
     setuptools-scm