diff --git a/tensor2tensor/serving/serving_utils.py b/tensor2tensor/serving/serving_utils.py
index cfc2f3b5b..ba535ca88 100644
--- a/tensor2tensor/serving/serving_utils.py
+++ b/tensor2tensor/serving/serving_utils.py
@@ -23,6 +23,7 @@
 import functools
 from googleapiclient import discovery
 import grpc
+import numpy as np
 
 from tensor2tensor import problems as problems_lib  # pylint: disable=unused-import
 from tensor2tensor.data_generators import text_encoder
@@ -140,8 +141,12 @@ def _make_cloud_mlengine_request(examples):
             }
         } for ex in examples]
     }
-    prediction = api.projects().predict(body=input_data, name=parent).execute()
-    return prediction["predictions"]
+    response = api.projects().predict(body=input_data, name=parent).execute()
+    predictions = response["predictions"]
+    for prediction in predictions:
+      prediction["outputs"] = np.array([prediction["outputs"]])
+      prediction["scores"] = np.array(prediction["scores"])
+    return predictions
 
   return _make_cloud_mlengine_request