@@ -24,6 +24,7 @@
 import time
 import os
 from urllib import parse
+import warnings
 
 import requests
 
@@ -383,11 +384,14 @@ def __ne__(self, other):
 
 @staticmethod
 def _init_model_source(data):
+"""Initialize the ML model source."""
 gcs_tflite_uri = data.pop('gcsTfliteUri', None)
 if gcs_tflite_uri:
 return TFLiteGCSModelSource(gcs_tflite_uri=gcs_tflite_uri)
 auto_ml_model = data.pop('automlModel', None)
 if auto_ml_model:
+warnings.warn('AutoML model support is deprecated and will be removed in the next '
+'major version.', DeprecationWarning)
 return TFLiteAutoMlSource(auto_ml_model=auto_ml_model)
 return None
 
@@ -604,9 +608,14 @@ def as_dict(self, for_upload=False):
 
 
 class TFLiteAutoMlSource(TFLiteModelSource):
-"""TFLite model source representing a tflite model created with AutoML."""
+"""TFLite model source representing a tflite model created with AutoML.
+
+AutoML model support is deprecated and will be removed in the next major version.
+"""
 
 def __init__(self, auto_ml_model, app=None):
+warnings.warn('AutoML model support is deprecated and will be removed in the next '
+'major version.', DeprecationWarning)
 self._app = app
 self.auto_ml_model = auto_ml_model