diff --git a/requirements.txt b/requirements.txt
index 1ca21d5..269929a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,4 @@ git+https://github.com/adsabs/ADSMicroserviceUtils.git@v1.1.5
 git+https://github.com/adsabs/ADSParser.git@v1.0.1
 Flask-RESTful==0.3.6
 webargs==1.8.1
-Werkzeug==0.11.15
+Werkzeug==0.15.3