diff --git a/packages/backend/src/remote/activitypub/models/note.ts b/packages/backend/src/remote/activitypub/models/note.ts
index 1c885e04d..ea74dddba 100644
--- a/packages/backend/src/remote/activitypub/models/note.ts
+++ b/packages/backend/src/remote/activitypub/models/note.ts
@@ -157,7 +157,7 @@ export async function createNote(value: string | IObject, resolver?: Resolver, s
 	// Quote
 	let quote: Note | undefined | null;
 
-	if (note._misskey_quote || note.quoteUrl) {
+	if (note._misskey_quote || note.quoteUrl || note.quoteUri) {
 		const tryResolveNote = async (uri: string): Promise<{
 			status: 'ok';
 			res: Note | null;
@@ -184,7 +184,7 @@ export async function createNote(value: string | IObject, resolver?: Resolver, s
 			}
 		};
 
-		const uris = unique([note._misskey_quote, note.quoteUrl].filter((x): x is string => typeof x === 'string'));
+		const uris = unique([note._misskey_quote, note.quoteUrl, note.quoteUri].filter((x): x is string => typeof x === 'string'));
 		const results = await Promise.all(uris.map(uri => tryResolveNote(uri)));
 
 		quote = results.filter((x): x is { status: 'ok', res: Note | null } => x.status === 'ok').map(x => x.res).find(x => x);
diff --git a/packages/backend/src/remote/activitypub/renderer/index.ts b/packages/backend/src/remote/activitypub/renderer/index.ts
index 2e1fbf1dd..6afdc021c 100644
--- a/packages/backend/src/remote/activitypub/renderer/index.ts
+++ b/packages/backend/src/remote/activitypub/renderer/index.ts
@@ -22,6 +22,7 @@ export const renderActivity = (x: any): IActivity | null => {
 				movedToUri: 'as:movedTo',
 				sensitive: 'as:sensitive',
 				Hashtag: 'as:Hashtag',
+				quoteUri: 'fedibird:quoteUri',
 				quoteUrl: 'as:quoteUrl',
 				// Mastodon
 				toot: 'http://joinmastodon.org/ns#',
diff --git a/packages/backend/src/remote/activitypub/renderer/note.ts b/packages/backend/src/remote/activitypub/renderer/note.ts
index b3bafaa3a..83df0b10d 100644
--- a/packages/backend/src/remote/activitypub/renderer/note.ts
+++ b/packages/backend/src/remote/activitypub/renderer/note.ts
@@ -142,6 +142,7 @@ export default async function renderNote(note: Note, dive = true, isTalk = false
 			mediaType: "text/x.misskeymarkdown",
 		},
 		_misskey_quote: quote,
+		quoteUri: quote,
 		quoteUrl: quote,
 		published: note.createdAt.toISOString(),
 		to,
diff --git a/packages/backend/src/remote/activitypub/type.ts b/packages/backend/src/remote/activitypub/type.ts
index aabbd0679..17920254f 100644
--- a/packages/backend/src/remote/activitypub/type.ts
+++ b/packages/backend/src/remote/activitypub/type.ts
@@ -112,6 +112,7 @@ export interface IPost extends IObject {
 	};
 	_misskey_quote?: string;
 	quoteUrl?: string;
+	quoteUri?: string;
 	_misskey_talk: boolean;
 }