diff --git a/backend/api/posts/serializers.py b/backend/api/posts/serializers.py
index 87c4935..bacd4eb 100644
--- a/backend/api/posts/serializers.py
+++ b/backend/api/posts/serializers.py
@@ -116,7 +116,7 @@ class PostSerializer(serializers.ModelSerializer):
             "content": desc,
         }
 
-    def get_creator(self, obj) -> Dict[str, str]:
+    def get_creator(self, obj) -> Dict[str, Optional[str]]:
         return {
             "slug": obj.creator.slug,
             "name": obj.creator.name,