--- a/requirements.txt	Fri Aug 12 10:28:11 2016 +0200
+++ b/requirements.txt	Fri Aug 12 10:29:22 2016 +0200
@@ -1,17 +1,23 @@
-diff-match-patch==20121119
-Django==1.9.7
-django-comments-xtd==1.5.3
-django-contrib-comments==1.7.1
-django-model-utils==2.5
-django-notifications-hq==1.1
-djangorestframework==3.3.3
-gitdb==0.6.4
-GitPython==2.0.5
-jsonfield==1.0.3
-Pillow==3.2.0
-psycopg2==2.6.1
-pytz==2016.4
-requests==2.10.0
-six==1.10.0
-smmap==0.9.0
-sorl-thumbnail==12.4a1
+diff-match-patch==20121119
+Django==1.9.7
+django-comments-xtd==1.5.3
+django-contrib-comments==1.7.1
+django-haystack==2.5.0
+django-model-utils==2.5
+django-notifications-hq==1.1
+django-reversion==2.0.1
+django-reversion-compare==0.6.2
+django-revision==0.1.6
+djangorestframework==3.3.3
+elasticsearch==2.3.0
+gitdb==0.6.4
+GitPython==2.0.5
+jsonfield==1.0.3
+Pillow==3.2.0
+psycopg2==2.6.1
+pytz==2016.4
+requests==2.10.0
+six==1.10.0
+smmap==0.9.0
+sorl-thumbnail==12.4a1
+urllib3==1.16