diff --git a/lib/Client.js b/lib/Client.js
index e9591b0..9c13f22 100644
--- a/lib/Client.js
+++ b/lib/Client.js
@@ -1,10 +1,10 @@
 'use strict'
 
-var uuid = require('uuid')
-var zmq = require('zmq')
-var url = require('url')
-var _ = require('lodash')
-var Base = require('grenache-nodejs-base')
+const uuid = require('uuid')
+const zmq = require('zmq')
+const url = require('url')
+const _ = require('lodash')
+const Base = require('grenache-nodejs-base')
 
 class Client extends Base.Client {
   
@@ -28,7 +28,7 @@ class Client extends Base.Client {
   }
 
   _listen(transport, type, dest) {
-    var socket
+    let socket
     
     switch (type) {
       case 'req':
@@ -57,7 +57,7 @@ class Client extends Base.Client {
 
     socket.bindSync(dest)
 
-    var bindInfo = socket._zmq.getsockopt(zmq.ZMQ_LAST_ENDPOINT)
+    let bindInfo = socket._zmq.getsockopt(zmq.ZMQ_LAST_ENDPOINT)
     bindInfo = url.parse(bindInfo)
 
     transport.set({
@@ -69,7 +69,7 @@ class Client extends Base.Client {
   }
 
   _connect(transport, type, dest, cb) {
-    var socket
+    let socket
 
     switch (type) {
       case 'req':