diff --git a/CHANGELOG.md b/CHANGELOG.md
index 87c9967c4667..08e9b09a2817 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,7 @@
 
 ### Server
 - Enhance: ストリーミングAPIのパフォーマンスを向上
+- Fix: コントロールパネルの設定項目が正しく保存できない問題を修正
 
 ## 2023.10.1
 ### General
diff --git a/packages/backend/src/server/api/endpoints/admin/update-meta.ts b/packages/backend/src/server/api/endpoints/admin/update-meta.ts
index 72c4936c13be..f05819b186e6 100644
--- a/packages/backend/src/server/api/endpoints/admin/update-meta.ts
+++ b/packages/backend/src/server/api/endpoints/admin/update-meta.ts
@@ -96,8 +96,8 @@ export const paramDef = {
 		tosUrl: { type: 'string', nullable: true },
 		repositoryUrl: { type: 'string' },
 		feedbackUrl: { type: 'string' },
-		impressumUrl: { type: 'string' },
-		privacyPolicyUrl: { type: 'string' },
+		impressumUrl: { type: 'string', nullable: true },
+		privacyPolicyUrl: { type: 'string', nullable: true },
 		useObjectStorage: { type: 'boolean' },
 		objectStorageBaseUrl: { type: 'string', nullable: true },
 		objectStorageBucket: { type: 'string', nullable: true },