diff --git a/app/Topic.php b/app/Topic.php
index 282fbc7..a0ec749 100644
--- a/app/Topic.php
+++ b/app/Topic.php
@@ -7,8 +7,10 @@ use App\Article;
 
 class Topic extends Model
 {
+    protected $guarded = [];
+    
     public function articles()
     {
-        return $this->belongsToMany(Article::class);
+        return $this->belongsToMany(Article::class)->withTimestamps();
     }
 }