diff --git a/PHPCI/Model/Build.php b/PHPCI/Model/Build.php
index d3633dfe..174decb3 100644
--- a/PHPCI/Model/Build.php
+++ b/PHPCI/Model/Build.php
@@ -167,7 +167,7 @@ class Build extends BuildBase
 
     public function getExtra($key = null)
     {
-        $data = unserialize($this->data['extra']);
+        $data = json_decode($this->data['extra']);
 
         if (is_null($key)) {
             $rtn = $data;