diff --git a/ippisite/requirements.txt b/ippisite/requirements.txt
index bb503b0539d09612b201413bf77bf754b5cf4a4a..26860d1b069527311e44d1e5eee1ed123a67e359 100644
--- a/ippisite/requirements.txt
+++ b/ippisite/requirements.txt
@@ -13,3 +13,4 @@ bioblend
 django-allauth
 sklearn
 scipy
+matplotlib