diff --git a/requirements.txt b/requirements.txt
index 482a9fe0ddfc26bcf7cf63c749938f4c36f18f73..1ceecd0c59b972f99d90ad5b43226a69f0824106 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,11 +1,13 @@
 amqp==2.5.2
 billiard==3.6.2.0
+blinker==1.4
 celery==4.4.0
 Click==7.0
 dominate==2.4.0
 Flask==1.1.1
 Flask-Bootstrap==3.3.7.1
 Flask-SocketIO==4.2.1
+Flask-SSO==0.4.0
 Flask-Testing==0.7.1
 gevent==1.4.0
 greenlet==0.4.15