diff --git a/pkgs/development/python-modules/pydantic/1.nix b/pkgs/development/python-modules/pydantic/1.nix
index da0ff4c6f6a6..a5753f5ff525 100644
--- a/pkgs/development/python-modules/pydantic/1.nix
+++ b/pkgs/development/python-modules/pydantic/1.nix
@@ -2,6 +2,7 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+  pythonAtLeast,
 
   # build-system
   cython,
@@ -26,6 +27,9 @@ buildPythonPackage rec {
   version = "1.10.24";
   pyproject = true;
 
+  # https://github.com/pydantic/pydantic/pull/12263
+  disabled = pythonAtLeast "3.14";
+
   src = fetchFromGitHub {
     owner = "pydantic";
     repo = "pydantic";