diff --git a/CHANGELOG.md b/CHANGELOG.md
index 13dccdc38b..bf62565b8c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,13 @@
 
 -->
 
+## 12.x.x (unreleased)
+
+### Improvements
+
+### Bugfixes
+- リレー向けのActivityが一部実装で除外されてしまうことがあるのを修正
+
 ## 12.94.1 (2021/10/25)
 
 ### Improvements
diff --git a/src/remote/activitypub/renderer/delete.ts b/src/remote/activitypub/renderer/delete.ts
index 83b27fa866..176a6f7e27 100644
--- a/src/remote/activitypub/renderer/delete.ts
+++ b/src/remote/activitypub/renderer/delete.ts
@@ -4,5 +4,6 @@ import { User } from '@/models/entities/user';
 export default (object: any, user: { id: User['id']; host: null }) => ({
 	type: 'Delete',
 	actor: `${config.url}/users/${user.id}`,
-	object
+	object,
+	published: new Date().toISOString(),
 });
diff --git a/src/remote/activitypub/renderer/undo.ts b/src/remote/activitypub/renderer/undo.ts
index f9082ffdfc..14115b788d 100644
--- a/src/remote/activitypub/renderer/undo.ts
+++ b/src/remote/activitypub/renderer/undo.ts
@@ -7,6 +7,7 @@ export default (object: any, user: { id: User['id'] }) => {
 	return {
 		type: 'Undo',
 		actor: `${config.url}/users/${user.id}`,
-		object
+		object,
+		published: new Date().toISOString(),
 	};
 };
diff --git a/src/remote/activitypub/renderer/update.ts b/src/remote/activitypub/renderer/update.ts
index d9a8149af3..8bb415d117 100644
--- a/src/remote/activitypub/renderer/update.ts
+++ b/src/remote/activitypub/renderer/update.ts
@@ -7,7 +7,8 @@ export default (object: any, user: { id: User['id'] }) => {
 		actor: `${config.url}/users/${user.id}`,
 		type: 'Update',
 		to: [ 'https://www.w3.org/ns/activitystreams#Public' ],
-		object
+		object,
+		published: new Date().toISOString(),
 	} as any;
 
 	return activity;