diff --git a/TOOLS/requirements.txt b/TOOLS/requirements.txt
index 0012df70..a04a1815 100644
--- a/TOOLS/requirements.txt
+++ b/TOOLS/requirements.txt
@@ -13,7 +13,7 @@ Mako==1.0.0
 MarkupSafe==0.23
 Pillow==2.5.1
 PyYAML==3.11
-Werkzeug==0.9.6
+Werkzeug==0.15.5
 argparse==1.2.1
 decorator==3.4.0
 docutils==0.12