diff --git a/requirements.txt b/requirements.txt
index f6f5354ff2..c3c081e667 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ flask-sslify==0.1.5
 Flask-Limiter==0.9.3
 passlib==1.6.2
 aniso8601==1.1.0
-blinker==1.3
+blinker==1.4
 psycopg2==2.7.3.2
 python-dateutil==2.4.2
 pytz==2016.7