diff --git a/src/Models/Transaction.php b/src/Models/Transaction.php
index 5672da404..0bae76222 100644
--- a/src/Models/Transaction.php
+++ b/src/Models/Transaction.php
@@ -38,7 +38,7 @@ class Transaction extends Model
     final public const TYPE_WITHDRAW = 'withdraw';
 
     /**
-     * @var string[]
+     * @var array<int,string>
      */
     protected $fillable = [
         'payable_type',
diff --git a/src/Models/Transfer.php b/src/Models/Transfer.php
index 89f23444b..58d35d49e 100644
--- a/src/Models/Transfer.php
+++ b/src/Models/Transfer.php
@@ -42,7 +42,7 @@ class Transfer extends Model
     final public const STATUS_GIFT = 'gift';
 
     /**
-     * @var string[]
+     * @var array<int,string>
      */
     protected $fillable = [
         'status',
diff --git a/src/Models/Wallet.php b/src/Models/Wallet.php
index 51f32a853..f0875e442 100644
--- a/src/Models/Wallet.php
+++ b/src/Models/Wallet.php
@@ -55,7 +55,7 @@ class Wallet extends Model implements Customer, WalletFloat, Confirmable, Exchan
     use HasGift;
 
     /**
-     * @var string[]
+     * @var array<int,string>
      */
     protected $fillable = [
         'holder_type',