diff --git a/docs/downgrade.sql b/docs/downgrade.sql
index 192800257b..149e82fafe 100644
--- a/docs/downgrade.sql
+++ b/docs/downgrade.sql
@@ -1,6 +1,7 @@
 BEGIN;
 
 DELETE FROM "migrations" WHERE name IN (
+    'RemoveMentionedUsersColumn1710688552234',
     'NoteFile1710304584214',
     'RenameMetaColumns1705944717480',
     'SeparateHardMuteWordsAndPatterns1706413792769',
@@ -17,6 +18,19 @@ DELETE FROM "migrations" WHERE name IN (
     'RemoveNativeUtilsMigration1705877093218'
 );
 
+-- remove-mentioned-users-column
+ALTER TABLE "note" ADD "mentionedRemoteUsers" text NOT NULL DEFAULT '[]'::text;
+CREATE TABLE "temp_mentions_1710688552234" AS
+  SELECT "id", "url", "uri", "username", "host"
+  FROM "user"
+  JOIN "user_profile" ON "user"."id" = "user_profile". "userId" WHERE "user"."host" IS NOT NULL;
+CREATE UNIQUE INDEX "temp_mentions_id" ON "temp_mentions_1710688552234" ("id");
+UPDATE "note" SET "mentionedRemoteUsers" = (
+  SELECT COALESCE(json_agg(row_to_json("data")::jsonb - 'id')::text, '[]') FROM "temp_mentions_1710688552234" AS "data"
+  WHERE "data"."id" = ANY("note"."mentions")
+);
+DROP TABLE "temp_mentions_1710688552234";
+
 -- note-file
 DROP TABLE "note_file";
 
diff --git a/packages/backend-rs/src/model/entity/note.rs b/packages/backend-rs/src/model/entity/note.rs
index c851c776e2..f713e2e47e 100644
--- a/packages/backend-rs/src/model/entity/note.rs
+++ b/packages/backend-rs/src/model/entity/note.rs
@@ -38,8 +38,6 @@ pub struct Model {
     #[sea_orm(column_name = "visibleUserIds")]
     pub visible_user_ids: Vec<String>,
     pub mentions: Vec<String>,
-    #[sea_orm(column_name = "mentionedRemoteUsers", column_type = "Text")]
-    pub mentioned_remote_users: String,
     pub emojis: Vec<String>,
     pub tags: Vec<String>,
     #[sea_orm(column_name = "hasPoll")]