diff --git a/views/login.ejs b/views/login.ejs
index 9e5e623..4007f25 100644
--- a/views/login.ejs
+++ b/views/login.ejs
@@ -36,6 +36,7 @@
     </div>
   </div>
 </div>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/blueimp-md5/2.5.0/js/md5.min.js"></script>
 <script type="text/javascript">
 function key_login() {
 	if (event.keyCode == 13) {
@@ -50,7 +51,7 @@ function success(session_id) {
     window.location.href = "/";
 }
 function login() {
-    password = $.md5($("#password").val() + "syzoj2_xxx");
+    password = md5($("#password").val() + "syzoj2_xxx");
     $("#login").addClass("loading");
     $.ajax({
         url: "/api/login",
diff --git a/views/sign_up.ejs b/views/sign_up.ejs
index f3ccbc0..47c0f73 100644
--- a/views/sign_up.ejs
+++ b/views/sign_up.ejs
@@ -31,6 +31,7 @@
                 <a id="sign_up" class="ui button" onclick="submit()">注册</a>
             </form>
 </div>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/blueimp-md5/2.5.0/js/md5.min.js"></script>
 <script type="text/javascript">
 function show_error(error) {
     $("#error_info").text(error);
@@ -45,7 +46,7 @@ function submit() {
         show_error("两次输入的密码不一致");
         return;
     }
-    password = $.md5($("#password1").val() + "syzoj2_xxx")
+    password = md5($("#password1").val() + "syzoj2_xxx")
     $("#sign_up").addClass("loading");
     $.ajax({
         url: '/api/sign_up',