diff --git a/lib/slack.js b/lib/slack.js
index 5de4306e..b83de7a1 100644
--- a/lib/slack.js
+++ b/lib/slack.js
@@ -59,13 +59,17 @@ export default class SlackData extends EventEmitter {
     return channel ? channel.id: null
   }
 
-  retry (){
-    let interval = this.interval * 2
-    setTimeout(this.fetch.bind(this), interval)
-    this.emit('retry')
+  retry(delay = this.interval * 2) {
+    setTimeout(this.fetch.bind(this), delay);
+    this.emit('retry');
   }
 
   onres (err, res){
+    // Too Many Requests
+    if (res.status === 429) {
+      return this.retry(res.headers['retry-after'] * 1000);
+    }
+
     if (err) {
       this.emit('error', err)
       return this.retry()