diff --git a/flask_api/requirements.txt b/flask_api/requirements.txt
index 2d0dac2..517abe4 100644
--- a/flask_api/requirements.txt
+++ b/flask_api/requirements.txt
@@ -19,4 +19,4 @@ scikit-learn==0.19.0
 scipy==0.19.1
 six==1.10.0
 urllib3==1.22
-Werkzeug==0.12.2
+Werkzeug==0.15.3