diff --git a/FlaskApp/requirements.txt b/FlaskApp/requirements.txt
index 180b6f5..4960164 100644
--- a/FlaskApp/requirements.txt
+++ b/FlaskApp/requirements.txt
@@ -11,7 +11,7 @@ SecretStorage==2.0.0
 Twisted-Core==13.2.0
 Twisted-Names==13.2.0
 Twisted-Web==13.2.0
-Werkzeug==0.9.4
+Werkzeug==0.15.3
 apt-xapian-index==0.45
 argparse==1.2.1
 bleach==1.4.1