diff --git a/requirements.txt b/requirements.txt
index 5253a3e8..6b0ef76c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -64,4 +64,4 @@ objgraph==3.4.1
 gevent-websocket==0.10.1
 
 # msgpack
-msgpack==0.6.2
+msgpack==1.0.0