diff --git a/paddlehub/server/git_source.py b/paddlehub/server/git_source.py
index 18fd2b7b825378e766a9a3ddb730d86383f84d9e..4496d081fef2bc53c574f79641d741a8402c608c 100644
--- a/paddlehub/server/git_source.py
+++ b/paddlehub/server/git_source.py
@@ -21,6 +21,9 @@ import sys
 from collections import OrderedDict
 from typing import List
 
+# For some environments where git is not installed, we need to set this environment
+# variable to avoid errors.
+os.environ['GIT_PYTHON_REFRESH'] = 'quiet'
 import git
 from git import Repo