diff --git a/apps/common/utils.py b/apps/common/utils.py
index d53b3db6c..2a70fab09 100644
--- a/apps/common/utils.py
+++ b/apps/common/utils.py
@@ -14,7 +14,7 @@ import hashlib
 from email.utils import formatdate
 import calendar
 import threading
-from io import StringIO
+from six import StringIO
 
 import paramiko
 import sshpubkeys