diff --git a/app/Group.php b/app/Group.php
index 8fa84408..efe2ec02 100644
--- a/app/Group.php
+++ b/app/Group.php
@@ -32,6 +32,16 @@ class Group extends Model
     protected $hidden = ['created_at', 'updated_at'];
 
 
+    /**
+     * The attributes that should be cast.
+     *
+     * @var array
+     */
+    protected $casts = [
+        'twofaccounts_count' => 'integer',
+    ];
+
+
     /**
      * Get the TwoFAccounts of the group.
      */
diff --git a/app/TwoFAccount.php b/app/TwoFAccount.php
index e21e73e0..67043098 100644
--- a/app/TwoFAccount.php
+++ b/app/TwoFAccount.php
@@ -52,6 +52,17 @@ class TwoFAccount extends Model implements Sortable
     protected $hidden = ['token', 'uri', 'secret', 'algorithm', 'created_at', 'updated_at'];
 
 
+    /**
+     * The attributes that should be cast.
+     *
+     * @var array
+     */
+    protected $casts = [
+        'group_id' => 'integer',
+        'order_column' => 'integer',
+    ];
+
+
     /**
      *  An OTP object from package Spomky-Labs/otphp
      *