diff --git a/src/Ramcar/SourceOfAwareness.php b/src/Ramcar/SourceOfAwareness.php
index a466798f..656b1725 100644
--- a/src/Ramcar/SourceOfAwareness.php
+++ b/src/Ramcar/SourceOfAwareness.php
@@ -11,6 +11,7 @@ class SourceOfAwareness extends NameValue
     const FLYERS        = 'flyers';
     const WORD_OF_MOUTH = 'word_of_mouth';
     const OTHER         = 'other';
+    const REFERRAL      = 'referral';
 
     const COLLECTION = [
         'facebook' => 'Facebook',
@@ -19,6 +20,7 @@ class SourceOfAwareness extends NameValue
         'tarp_ads' => 'Tarp Ads',
         'flyers' => 'Flyers',
         'word_of_mouth' => 'Word of Mouth',
+        'referral' => 'Referral',
         'other' => 'Other',
     ];
 }