diff --git a/src/Models/Wallet.php b/src/Models/Wallet.php
index aca6027..773c620 100644
--- a/src/Models/Wallet.php
+++ b/src/Models/Wallet.php
@@ -18,6 +18,7 @@ class Wallet extends Model
 
     protected $casts = [
         'balance' => 'float',
+        'withdrawable_balance' => 'float',
     ];
 
     public function walletable()