diff --git a/requirements.txt b/requirements.txt
index defd80f1..be7a577c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,35 +3,35 @@ contextlib2==0.5.5
 diff-match-patch==20121119
 dj-database-url==0.4.2
 dj-static==0.0.6
-Django==1.11.4
+Django==1.11.5
 django-debug-toolbar==1.8
 django-ical==1.4
 django-recaptcha==1.3.1
 django-registration-redux==1.7
-django-reversion==2.0.9
+django-reversion==2.0.10
 django-toolbelt==0.0.1
 premailer==3.1.1
 django-widget-tweaks==1.4.1
 gunicorn==19.7.1
-icalendar==3.11.6
-lxml==3.8.0
+icalendar==3.11.7
+lxml==4.0.0
 Markdown==2.6.9
 Pillow==4.2.1
-psycopg2==2.7.3
+psycopg2==2.7.3.1
 Pygments==2.2.0
 PyPDF2==1.26.0
 python-dateutil==2.6.1
 pytz==2017.2
-raven==6.1.0
+raven==6.2.0
 reportlab==3.4.0
 selenium==3.5.0
 simplejson==3.11.1
-six==1.10.0
+six==1.11.0
 sqlparse==0.2.3
 static3==0.7.0
 svg2rlg==0.3
 yolk==0.4.3
 z3c.rml==3.2.0
 zope.event==4.3.0
-zope.interface==4.4.2
+zope.interface==4.4.3
 zope.schema==4.5.0