diff --git a/views/index.html b/views/index.html
index 620c3c9..3ad5585 100644
--- a/views/index.html
+++ b/views/index.html
@@ -19,7 +19,7 @@
 <script src="addon/search/searchcursor.js"></script>
 <script src="addon/edit/matchbrackets.js"></script>
 <script src="keymap/vim.js"></script>
-<script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/2.1.1/socket.io.slim.js"></script>
+<script src="2.1.1-socket.io.slim.js"></script>
 <script src="//cdn.jsdelivr.net/pouchdb/6.0.7/pouchdb.min.js"></script>
 <style type="text/css">
     html, body { height: 100%; margin: 0; padding: 0; }