diff --git a/Models/Promotion.php b/Models/Promotion.php
index af02de2..9d7b9e6 100644
--- a/Models/Promotion.php
+++ b/Models/Promotion.php
@@ -218,17 +218,6 @@ class Promotion
         return $this->createdAt;
     }
 
-    /**
-     * @param \DateTime $createdAt Calendar created at
-     *
-     * @since  1.0.0
-     */
-    public function setCreatedAt(\DateTime $createdAt)
-    {
-        $this->createdAt = $createdAt;
-        $this->calendar->setCreatedAt($createdAt);
-    }
-
     /**
      * @return int
      *