diff --git a/requirements.txt b/requirements.txt
index 75c2773..51403cf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -37,7 +37,7 @@ relativetimebuilder==0.2.0
 six==1.12.0
 speaklater==1.3
 SQLAlchemy==1.3.0
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 WTForms==2.2.1
 matplotlib==3.1.1
 decorator==4.4.0