Upgrade elasticsearch dependencies
@@ -51,8 +51,14 @@ GitPython==2.1.10
# Search
elasticsearch==6.2.0
+
+
+# elasticsearch-dsl==6.3.1 produces this error
+# File "/home/travis/build/rtfd/readthedocs.org/.tox/py36/lib/python3.6/site-packages/django_elasticsearch_dsl/documents.py", line 8, in <module>
+# from elasticsearch_dsl.document import DocTypeMeta as DSLDocTypeMeta
+# ImportError: cannot import name 'DocTypeMeta'
elasticsearch-dsl==6.1.0
-django-elasticsearch-dsl==0.5.0
+django-elasticsearch-dsl==0.5.1
pyquery==1.4.0
# Utils
