diff --git a/pkgs/development/python-modules/pytensor/default.nix b/pkgs/development/python-modules/pytensor/default.nix
index 8f775149f1f5..96ca2309c957 100644
--- a/pkgs/development/python-modules/pytensor/default.nix
+++ b/pkgs/development/python-modules/pytensor/default.nix
@@ -187,5 +187,8 @@ buildPythonPackage rec {
       bcdarwin
       ferrine
     ];
+    # Not yet compatible with numpy >= 2.0
+    # https://github.com/pymc-devs/pytensor/issues/688
+    broken = true;
   };
 }