diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5228be120b..d01358b278 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,7 @@
 - カスタム絵文字一括編集機能
 - カスタム絵文字一括インポート
 - 投稿フォームで一時的に投稿するアカウントを切り替えられるように
+- Unifying Misskey-specific IRIs in JSON-LD `@context`
 
 ### Bugfixes
 
diff --git a/packages/backend/src/remote/activitypub/renderer/index.ts b/packages/backend/src/remote/activitypub/renderer/index.ts
index 911118e4c9..cffc9bfe04 100644
--- a/packages/backend/src/remote/activitypub/renderer/index.ts
+++ b/packages/backend/src/remote/activitypub/renderer/index.ts
@@ -32,7 +32,7 @@ export const renderActivity = (x: any): IActivity | null => {
 				PropertyValue: 'schema:PropertyValue',
 				value: 'schema:value',
 				// Misskey
-				misskey: `${config.url}/ns#`,
+				misskey: 'https://misskey-hub.net/ns#',
 				'_misskey_content': 'misskey:_misskey_content',
 				'_misskey_quote': 'misskey:_misskey_quote',
 				'_misskey_reaction': 'misskey:_misskey_reaction',