diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 8616494..6e37d6c 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,10 @@
 Changelog
 ---------
 
+0.7.7 (2018-09-17)
+~~~~~~~~~~~~~~~~~~
+* fix `#41 stack trace when indexing in py3 <https://github.com/HBS-HBX/django-elastic-migrations/issues/41>`_
+
 0.7.6 (2018-09-11)
 ~~~~~~~~~~~~~~~~~~
 * fix `#36 es_update --start flag broken <https://github.com/HBS-HBX/django-elastic-migrations/issues/39>`_
diff --git a/README.md b/README.md
index 28acb49..c131e88 100644
--- a/README.md
+++ b/README.md
@@ -377,6 +377,12 @@ $ ./manage.py loaddata tests/myfixture.json
 Installed 101 object(s) from 1 fixture(s)
 ```
 
+There are already 100 films available using `loaddata` as follows:
+
+```
+$ ./manage.py loaddata tests/100films.json
+```
+
 ### Running Tests Locally
 
 Run `make test`. To run all tests and quality checks locally,
diff --git a/django_elastic_migrations/__init__.py b/django_elastic_migrations/__init__.py
index f1aa71a..72bb132 100644
--- a/django_elastic_migrations/__init__.py
+++ b/django_elastic_migrations/__init__.py
@@ -10,7 +10,7 @@
 from django_elastic_migrations.utils import loading
 from django_elastic_migrations.utils.django_elastic_migrations_log import get_logger
 
-__version__ = '0.7.6'
+__version__ = '0.7.7'
 
 default_app_config = 'django_elastic_migrations.apps.DjangoElasticMigrationsConfig'  # pylint: disable=invalid-name
 
diff --git a/django_elastic_migrations/indexes.py b/django_elastic_migrations/indexes.py
index ecfa488..d6b204d 100644
--- a/django_elastic_migrations/indexes.py
+++ b/django_elastic_migrations/indexes.py
@@ -579,7 +579,7 @@ def generate_batches(cls, qs=None, batch_size=BATCH_SIZE, total_items=None, upda
         try:
             qs_ids = list(qs.values_list(cls.PK_ATTRIBUTE, flat=True))
         except TypeError as e:
-            if "values_list() got an unexpected keyword argument 'flat'" in e:
+            if "values_list() got an unexpected keyword argument 'flat'" in str(e):
                 qs_ids = [str(id) for id in list(qs.values_list(cls.PK_ATTRIBUTE))]
             else:
                 raise