diff --git a/Open_Data_-_Ukrainian_Ports_Statistics/requirements.txt b/Open_Data_-_Ukrainian_Ports_Statistics/requirements.txt
index d4ff2a6..2aaa70f 100644
--- a/Open_Data_-_Ukrainian_Ports_Statistics/requirements.txt
+++ b/Open_Data_-_Ukrainian_Ports_Statistics/requirements.txt
@@ -1,7 +1,7 @@
 Flask==0.11.1
 Jinja2==2.8
 MarkupSafe==0.23
-Werkzeug==0.11.10
+Werkzeug==0.15.3
 argparse==1.2.1
 click==6.6
 itsdangerous==0.24