1 files changed, 3 insertions, 4 deletions
diff --git a/django/contrib/postgres/forms/jsonb.py b/django/contrib/postgres/forms/jsonb.py
index 719de3ae66..28429c7172 100644
--- a/django/contrib/postgres/forms/jsonb.py
+++ b/django/contrib/postgres/forms/jsonb.py
@@ -1,17 +1,16 @@
 import json
 
 from django import forms
-from django.utils import six
 from django.utils.translation import ugettext_lazy as _
 
 __all__ = ['JSONField']
 
 
-class InvalidJSONInput(six.text_type):
+class InvalidJSONInput(str):
     pass
 
 
-class JSONString(six.text_type):
+class JSONString(str):
     pass
 
 
@@ -36,7 +35,7 @@ class JSONField(forms.CharField):
                 code='invalid',
                 params={'value': value},
             )
-        if isinstance(converted, six.text_type):
+        if isinstance(converted, str):
             return JSONString(converted)
         else:
             return converted