diff --git a/Readme.md b/Readme.md
index 625cfed..4e08a49 100644
--- a/Readme.md
+++ b/Readme.md
@@ -33,6 +33,7 @@ var timer = setInterval(function(){
   - `complete` completion character defaulting to "="
   - `incomplete` incomplete character defaulting to "-"
   - `clear` option to clear the bar on completion defaulting to false
+  - `callback` optional function to call when the progress bar completes
 
 ## Tokens:
 
diff --git a/lib/node-progress.js b/lib/node-progress.js
index b3a7982..8691327 100644
--- a/lib/node-progress.js
+++ b/lib/node-progress.js
@@ -21,6 +21,7 @@ exports = module.exports = ProgressBar;
  *   - `stream` the output stream defaulting to stdout
  *   - `complete` completion character defaulting to "="
  *   - `incomplete` incomplete character defaulting to "-"
+ *   - `callback` optional function to call when the progress bar completes
  *
  * Tokens:
  *
@@ -58,6 +59,7 @@ function ProgressBar(fmt, options) {
       complete: options.complete || '='
     , incomplete: options.incomplete || '-'
   };
+  this.callback = options.callback || function () {};
 }
 
 /**
@@ -86,6 +88,7 @@ ProgressBar.prototype.tick = function(len, tokens){
   if (this.curr >= this.total) {
     this.complete = true;
     this.terminate();
+    this.callback(this);
     return;
   }
 };