diff --git a/src/Models/Activity.php b/src/Models/Activity.php
index abde1b6d..c2505fec 100644
--- a/src/Models/Activity.php
+++ b/src/Models/Activity.php
@@ -24,9 +24,9 @@
  * @property \Illuminate\Support\Collection|null $properties
  * @property \Carbon\Carbon|null $created_at
  * @property \Carbon\Carbon|null $updated_at
- * @property-read \Illuminate\Database\Eloquent\Model|\Eloquent $causer
+ * @property-read \Illuminate\Database\Eloquent\Model|\Eloquent|null $causer
  * @property-read \Illuminate\Support\Collection $changes
- * @property-read \Illuminate\Database\Eloquent\Model|\Eloquent $subject
+ * @property-read \Illuminate\Database\Eloquent\Model|\Eloquent|null $subject
  *
  * @method static \Illuminate\Database\Eloquent\Builder|\Spatie\Activitylog\Models\Activity causedBy(\Illuminate\Database\Eloquent\Model $causer)
  * @method static \Illuminate\Database\Eloquent\Builder|\Spatie\Activitylog\Models\Activity forBatch(string $batchUuid)