diff --git a/client-solid/src/Util/api.ts b/client-solid/src/Util/api.ts
index a800df4..4209cc8 100644
--- a/client-solid/src/Util/api.ts
+++ b/client-solid/src/Util/api.ts
@@ -20,6 +20,7 @@ export interface NewComment {
   content: string;
   user_token: string;
   parent_post_id: number;
+  parent_comment_id?: number;
 }
 
 export interface Comment extends NewComment {