diff --git a/requirements.txt b/requirements.txt
index dfef63a..7125c62 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,4 +22,4 @@ Rx==1.6.1
 sentinels==1.0.0
 six==1.11.0
 typing==3.6.6
-Werkzeug==0.15.3
+Werkzeug==0.15.5