diff --git a/OSMTagFinder/requirements.txt b/OSMTagFinder/requirements.txt
index 54fe367..1f83785 100644
--- a/OSMTagFinder/requirements.txt
+++ b/OSMTagFinder/requirements.txt
@@ -48,7 +48,7 @@ unittest2==1.1.0
 virtualenv==16.0.0
 visitor==0.1.3
 webencodings==0.5.1
-Werkzeug==0.15.3
+Werkzeug==0.15.5
 Whoosh==2.7.4
 wordnik==2.1.3
 wrapt==1.10.11