diff --git a/Update.json b/Update.json
index 9c4a525a..f47aa41b 100644
--- a/Update.json
+++ b/Update.json
@@ -3135,6 +3135,17 @@
                 }
             ],
             "Notes": "为什么这个破东西老是换位置"
+        },
+        "2.4.6": {
+            "UpdateDate": 1759548958578,
+            "Prerelease": true,
+            "UpdateContents": [
+                {
+                    "PR": 871,
+                    "Description": "Add tooltip for ProblemSwitcher"
+                }
+            ],
+            "Notes": "现在, 你只需要将鼠标悬浮在比赛题目切换器上方, 即可查看题目名称"
         }
     }
 }
\ No newline at end of file
diff --git a/XMOJ.user.js b/XMOJ.user.js
index f10f0fa4..5db634a6 100644
--- a/XMOJ.user.js
+++ b/XMOJ.user.js
@@ -1,6 +1,6 @@
 // ==UserScript==
 // @name         XMOJ
-// @version      2.4.5
+// @version      2.4.6
 // @description  XMOJ增强脚本
 // @author       @XMOJ-Script-dev, @langningchen and the community
 // @namespace    https://github/langningchen
@@ -1695,7 +1695,7 @@ async function main() {
                             if (problemList[i].url === location.href) {
                                 activeClass = "active";
                             }
-                            problemSwitcher.innerHTML += `<a href="${problemList[i].url}" class="btn btn-outline-secondary mb-2 ${activeClass}">${buttonText}</a>`;
+                            problemSwitcher.innerHTML += `<a href="${problemList[i].url}" title="${problemList[i].title.trim()}" class="btn btn-outline-secondary mb-2 ${activeClass}">${buttonText}</a>`;
                         }
                         document.body.appendChild(problemSwitcher);
                     }
diff --git a/package.json b/package.json
index a3ac3141..d377dcd3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "xmoj-script",
-  "version": "2.4.5",
+  "version": "2.4.6",
   "description": "an improvement script for xmoj.tech",
   "main": "AddonScript.js",
   "scripts": {