diff --git a/requirements.txt b/requirements.txt
index 03448bdb..1f32e3dc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,6 +17,7 @@ Pygments==2.0.2
 PyPDF2==1.24
 python-dateutil==2.4.2
 pytz==2015.4
+raven==5.8.1
 reportlab==3.1.44
 selenium==2.46.0
 simplejson==3.7.2