diff --git a/admin/index.html b/admin/index.html
index 5bb2732..1eb43e0 100644
--- a/admin/index.html
+++ b/admin/index.html
@@ -146,4 +146,19 @@
   </div>
 </div>
 </body>
+<script type="text/javascript">
+  var lastY;
+  document.body.addEventListener('touchmove', function (event) {
+    lastY = event.changedTouches[0].clientY;
+  });
+  document.body.addEventListener('touchmove', function (event) {
+    var y = event.changedTouches[0].clientY;
+    var st = this.scrollTop;
+    if (y >= lastY && st <= 10) {
+      lastY = y;
+      event.preventDefault();
+    }
+    lastY = y;
+  });
+</script>
 </html>