diff --git a/pkgs/development/python-modules/replicate/default.nix b/pkgs/development/python-modules/replicate/default.nix
index ee7b4587c82c..f00228e704ab 100644
--- a/pkgs/development/python-modules/replicate/default.nix
+++ b/pkgs/development/python-modules/replicate/default.nix
@@ -2,6 +2,7 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+  pythonAtLeast,
   setuptools,
   httpx,
   packaging,
@@ -18,6 +19,9 @@ buildPythonPackage rec {
   version = "1.1.0b3";
   pyproject = true;
 
+  # uses pydantic.v1 compat layer, unsupported on 3.14
+  disabled = pythonAtLeast "3.14";
+
   src = fetchFromGitHub {
     owner = "replicate";
     repo = "replicate-python";