diff --git a/src/metadata/metadata.json b/src/metadata/metadata.json
index 31f923ce..95eee816 100644
--- a/src/metadata/metadata.json
+++ b/src/metadata/metadata.json
@@ -46,7 +46,7 @@
       "name": "backend",
       "type": "array",
       "description": "Choose a backend",
-      "options": ["Nccl", "Gloo"],
+      "options": ["Nccl", "Gloo", "XLA-TPU"],
       "default": "Nccl"
     }
   },