diff --git a/requirements.txt b/requirements.txt
index eed0a0b02..c0e0aab67 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,6 +6,7 @@ Flask-Caching
 Flask-Compress
 Flask-Limiter==1.1.0
 Flask-Mail==0.9.1
+Flask-Session
 gevent
 greenlet
 gunicorn