diff --git a/packages/backend/src/core/HashtagService.ts b/packages/backend/src/core/HashtagService.ts
index eb192ee6da..23862180f1 100644
--- a/packages/backend/src/core/HashtagService.ts
+++ b/packages/backend/src/core/HashtagService.ts
@@ -56,8 +56,10 @@ export class HashtagService {
 	public async updateHashtag(user: { id: MiUser['id']; host: MiUser['host']; }, tag: string, isUserAttached = false, inc = true) {
 		tag = normalizeForSearch(tag);
 
-		// TODO: サンプリング
-		this.updateHashtagsRanking(tag, user.id);
+		if (this.userEntityService.isLocalUser(user)) {
+			// TODO: サンプリング
+			this.updateHashtagsRanking(tag, user.id);
+		}
 
 		const index = await this.hashtagsRepository.findOneBy({ name: tag });