diff --git a/modelscope/utils/constant.py b/modelscope/utils/constant.py
index a2897b9c..aef177bb 100644
--- a/modelscope/utils/constant.py
+++ b/modelscope/utils/constant.py
@@ -507,7 +507,7 @@ class Frameworks(object):
 REPO_TYPE_MODEL = 'model'
 REPO_TYPE_DATASET = 'dataset'
 REPO_TYPE_SUPPORT = [REPO_TYPE_MODEL, REPO_TYPE_DATASET]
-DEFAULT_MODEL_REVISION = 'master'
+DEFAULT_MODEL_REVISION = None
 MASTER_MODEL_BRANCH = 'master'
 DEFAULT_REPOSITORY_REVISION = 'master'
 DEFAULT_DATASET_REVISION = 'master'