diff --git a/requirement_dev.txt b/requirement_dev.txt
index bb4b154..b86adf0 100644
--- a/requirement_dev.txt
+++ b/requirement_dev.txt
@@ -16,4 +16,4 @@ python-chatfuel-class==2.1.3
 requests==2.19.1
 six==1.11.0
 urllib3==1.23
-Werkzeug==0.14.1
+Werkzeug==0.15.3