diff --git a/lang/python/json-rpc/requirements.txt b/lang/python/json-rpc/requirements.txt
index cd77f29..05ee776 100644
--- a/lang/python/json-rpc/requirements.txt
+++ b/lang/python/json-rpc/requirements.txt
@@ -4,4 +4,4 @@ idna==2.6
 json-rpc==1.10.3
 requests==2.18.4
 urllib3==1.22
-Werkzeug==0.12.2
+Werkzeug==0.15.5