diff --git a/requirements.txt b/requirements.txt
index 5e767a8..b4e41ff 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -44,7 +44,7 @@ Flask-Login==0.4.1
 Flask-Mail==0.9.1
 Flask-Principal==0.4.0
 Flask-Restless==0.17.0
-Flask-Security==3.0.0
+Flask-Security==5.5.1
 Flask-Session==0.3.1
 Flask-SQLAlchemy==2.4.0
 Flask-WTF==0.14.2