diff --git a/requirements.txt b/requirements.txt
index 6706084..275c324 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ PyYAML==3.11
 Pygments==1.6
 Pyste==0.9.10
 Twisted-Core==14.0.2
-Werkzeug==0.8.3
+Werkzeug==0.15.3
 argparse==1.2.1
 base58==0.2.1
 certifi==14.05.14