diff --git a/salt/utils/serializers/json.py b/salt/utils/serializers/json.py
index <HASH>..<HASH> 100644
--- a/salt/utils/serializers/json.py
+++ b/salt/utils/serializers/json.py
@@ -15,7 +15,7 @@ try:
 except ImportError:
     import json
 
-from six import string_types
+from salt.utils.six import string_types
 from salt.utils.serializers import DeserializationError, SerializationError
 
 __all__ = ['deserialize', 'serialize', 'available']
Replaced module six in file /salt/utils/serializers/json.py