diff --git a/requirements.txt b/requirements.txt
index 62ef29f6..59855ecd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 # Django 1.8 LTS is required, version 1.9 is not supported
 Django >=1.8,<1.9
 Pillow
+mistune
 django-jinja