diff --git a/T/T4ATensorTrain/WeakDeps.toml b/T/T4ATensorTrain/WeakDeps.toml
index f1cc306..0c3f815 100644
--- a/T/T4ATensorTrain/WeakDeps.toml
+++ b/T/T4ATensorTrain/WeakDeps.toml
@@ -1,4 +1,4 @@
 [0]
 ITensorMPS = "0d1a4710-d33b-49a5-8f18-73bdf49b47e2"
 ITensors = "9136182c-28ba-11e9-034c-db9fb085ebd5"
-T4AITensorCompat = "b1eb41b5-6a53-403c-af93-e8e49e55f57f"
+T4AITensorCompat = "864b39ca-388c-4f43-a593-a1076cf4b253"