diff --git a/model/command/command.py b/model/command/command.py
index 1c0cb6c79..009a51789 100644
--- a/model/command/command.py
+++ b/model/command/command.py
@@ -324,7 +324,7 @@ class Command:
         if len(l) == 1:
             try:
                 update_info = util.updator.check_update()
-                update_info += "\nTips:\n输入「update latest」更新到最新版本\n输入「update r」重启机器人\n"
+                update_info += "\nTips:\n输入「update latest」更新到最新版本\n输入「update <版本号如v3.1.3>」切换到指定版本\n输入「update r」重启机器人\n"
                 return True, update_info, "update"
             except BaseException as e:
                 return False, "检查更新失败: "+str(e), "update"
@@ -336,8 +336,18 @@ class Command:
                     return True, "更新成功，重启生效。可输入「update r」重启", "update"
                 except BaseException as e:
                     return False, "更新失败: "+str(e), "update"
-            if l[1] == "r":
+            elif l[1] == "r":
                 util.updator._reboot()
+            else:
+                if l[1].lower().startswith('v'):
+                    try:
+                        release_data = util.updator.request_release_info(latest=False)
+                        util.updator.update_project(release_data, latest=False, version=l[1])
+                        return True, "更新成功，重启生效。可输入「update r」重启", "update"
+                    except BaseException as e:
+                        return False, "更新失败: "+str(e), "update"
+                else:
+                    return False, "版本号格式错误", "update"
 
     def reset(self):
         return False
@@ -364,6 +374,4 @@ class Command:
         return False
     
     def draw(self):
-        return False
-    
-    
\ No newline at end of file
+        return False
\ No newline at end of file
diff --git a/util/updator.py b/util/updator.py
index 7564301f0..a379cf8ce 100644
--- a/util/updator.py
+++ b/util/updator.py
@@ -33,12 +33,19 @@ def request_release_info(latest: bool = True) -> list:
     请求版本信息。
     返回一个列表，每个元素是一个字典，包含版本号、发布时间、更新内容、commit hash等信息。
     '''
-    api_url = "https://api.github.com/repos/Soulter/AstrBot/releases"
-    result = requests.get(api_url).json()
-    if latest:
-        ret = github_api_release_parser([result[0]])
-    else:
-        ret = github_api_release_parser(result)
+    api_url1 = "https://api.github.com/repos/Soulter/AstrBot/releases"
+    api_url2 = "https://api.soulter.top/releases" # 0-10 分钟的缓存时间
+    try:
+        result = requests.get(api_url2).json()
+    except BaseException as e:
+        result = requests.get(api_url1).json()
+    try:
+        if latest:
+            ret = github_api_release_parser([result[0]])
+        else:
+            ret = github_api_release_parser(result)
+    except BaseException as e:
+        raise Exception(f"解析版本信息失败: {result}")
     return ret
         
 def github_api_release_parser(releases: list) -> list:
@@ -48,7 +55,7 @@ def github_api_release_parser(releases: list) -> list:
     '''
     ret = []
     for release in releases:
-        version = release['tag_name']
+        version = release['name']
         commit_hash = ''
         # 规范是: v3.0.7.xxxxxx，其中xxxxxx为 commit hash
         _t = version.split(".")
@@ -58,19 +65,25 @@ def github_api_release_parser(releases: list) -> list:
             "version": release['name'],
             "published_at": release['published_at'],
             "body": release['body'],
-            "commit_hash": commit_hash
+            "commit_hash": commit_hash,
+            "tag_name": release['tag_name']
         })
     return ret
 
 def check_update() -> str:
     repo = find_repo()
-    curr_commit = repo.head.commit.hexsha[:6]
+    curr_commit = repo.commit().hexsha
     update_data = request_release_info()
     new_commit = update_data[0]['commit_hash']
-    if curr_commit == new_commit:
+    print(f"当前版本: {curr_commit}")
+    print(f"最新版本: {new_commit}")
+    if curr_commit.startswith(new_commit):
         return "当前已经是最新版本。"
     else:
         update_info = f"""有新版本可用。
+=== 当前版本 ===
+{curr_commit}
+
 === 新版本 ===
 {update_data[0]['version']}
 
@@ -89,17 +102,17 @@ def update_project(update_data: list,
     # update_data = request_release_info(latest)
     if latest:
         # 检查本地commit和最新commit是否一致
-        curr_commit = repo.head.commit.hexsha[:6]
+        curr_commit = repo.head.commit.hexsha
         new_commit = update_data[0]['commit_hash']
         if curr_commit == '':
             raise Exception("无法获取当前版本号对应的版本位置。请联系项目维护者。")
-        if curr_commit == new_commit:
+        if curr_commit.startswith(new_commit):
             raise Exception("当前已经是最新版本。")
         else:
             # 更新到最新版本对应的commit
             try:
                 repo.remotes.origin.fetch()
-                repo.git.checkout(new_commit)
+                repo.git.checkout(update_data[0]['tag_name'])
                 if reboot: _reboot()
             except BaseException as e:
                 raise e
@@ -107,10 +120,10 @@ def update_project(update_data: list,
         # 更新到指定版本
         flag = False
         for data in update_data:
-            if data['version'] == version:
+            if data['tag_name'] == version:
                 try:
                     repo.remotes.origin.fetch()
-                    repo.git.checkout(data['commit_hash'])
+                    repo.git.checkout(data['tag_name'])
                     flag = True
                     if reboot: _reboot()
                 except BaseException as e: