diff --git a/python/ray/tune/trainable.py b/python/ray/tune/trainable.py
index aa08fd03b..c2915b19f 100644
--- a/python/ray/tune/trainable.py
+++ b/python/ray/tune/trainable.py
@@ -5,7 +5,7 @@ from datetime import datetime
 import copy
 import logging
 import os
-import pickle
+import ray.cloudpickle as pickle
 import platform
 
 from ray.tune.utils.trainable import TrainableUtil
diff --git a/python/ray/tune/utils/trainable.py b/python/ray/tune/utils/trainable.py
index bb9299793..cc61e3a83 100644
--- a/python/ray/tune/utils/trainable.py
+++ b/python/ray/tune/utils/trainable.py
@@ -5,7 +5,7 @@ import shutil
 from typing import Dict, Any
 
 import pandas as pd
-import pickle
+import ray.cloudpickle as pickle
 import os
 
 import ray