diff --git a/.travis.yml b/.travis.yml
index 73fdefd..9f1c2ca 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,11 +1,10 @@
 language: node_js
 node_js:
-  - "4"
-  - "6"
-  - "7"
-  - "8"
-  - "10"
-  - "node"
+  - 7
+  - 8
+  - 9
+  - 10
+  - 11
 sudo: false
 after_script:
  - npm i coveralls
diff --git a/index.js b/index.js
index 3fc4769..d259ce0 100644
--- a/index.js
+++ b/index.js
@@ -45,8 +45,6 @@ var RedisStore = module.exports = function (options) {
   options.path = options.path || options.socket || null;             // For backwards compatibility
   if (!options.client) {
     debug('Init redis new client');
-    // client = redis.createClient(options);
-    // 
     // Apply ioredis, Add has redis cluster condition：
     if (!options.isRedisCluster) {
       client = redis.createClient(options);