diff --git a/src/lib/constants/external-links.ts b/src/lib/constants/external-links.ts
index 623c740f1..43b8575c7 100644
--- a/src/lib/constants/external-links.ts
+++ b/src/lib/constants/external-links.ts
@@ -3,7 +3,8 @@ import {
   ATCODER_PROBLEMS_URL,
   AOJ_ATCODER_JOI_URL,
   AOJ_PCK_URL,
-  ICPC_JAPAN_PROBLEMS_URL,
+  X_URL,
+  MOND_URL,
   GITHUB_URL,
 } from './urls';
 
@@ -12,6 +13,7 @@ export const externalLinks = [
   { title: `AtCoder Problems`, path: ATCODER_PROBLEMS_URL },
   { title: `AOJ / AtCoder-JOI`, path: AOJ_ATCODER_JOI_URL },
   { title: `AOJ-PCK`, path: AOJ_PCK_URL },
-  { title: `ICPC Japan Problems`, path: ICPC_JAPAN_PROBLEMS_URL },
+  { title: `X`, path: X_URL },
+  { title: `mond`, path: MOND_URL },
   { title: `GitHub`, path: GITHUB_URL },
 ];
diff --git a/src/lib/constants/navbar-links.ts b/src/lib/constants/navbar-links.ts
index 4d1aa974f..9dd66b9eb 100644
--- a/src/lib/constants/navbar-links.ts
+++ b/src/lib/constants/navbar-links.ts
@@ -26,9 +26,9 @@ export const navbarLinks = [
 export const navbarDashboardLinks = [
   { title: `問題のインポート`, path: IMPORTING_PROBLEMS_PAGE },
   { title: `一覧表`, path: PROBLEMS_PAGE },
+  { title: `投票管理`, path: VOTE_MANAGEMENT_PAGE },
   { title: `問題集`, path: WORKBOOKS_PAGE },
   { title: `問題集（並び替え）`, path: WORKBOOKS_ORDER_PAGE },
   { title: `タグ一覧`, path: TAGS_PAGE },
   { title: `アカウント移行`, path: ACCOUNT_TRANSFER_PAGE },
-  { title: `投票管理`, path: VOTE_MANAGEMENT_PAGE },
 ];
diff --git a/src/lib/constants/urls.ts b/src/lib/constants/urls.ts
index 508bbb7bd..3fd20fd53 100644
--- a/src/lib/constants/urls.ts
+++ b/src/lib/constants/urls.ts
@@ -19,7 +19,9 @@ export const AOJ_ATCODER_JOI_URL: string = 'https://joi.goodbaton.com/';
 
 export const AOJ_PCK_URL: string = 'https://pro-ktmr.github.io/aoj-pck/';
 
-export const ICPC_JAPAN_PROBLEMS_URL: string = 'https://icpc-japan-problems.irrrrr.cc/';
+export const X_URL: string = 'https://x.com/acnovisteps';
+
+export const MOND_URL: string = 'https://mond.how/ja/acnovisteps';
 
 export const GITHUB_URL: string = 'https://github.com/AtCoder-NoviSteps/AtCoderNoviSteps';