diff --git a/templates/tw_stock.html.hbs b/templates/tw_stock.html.hbs
index 67016d5..6476852 100644
--- a/templates/tw_stock.html.hbs
+++ b/templates/tw_stock.html.hbs
@@ -169,8 +169,8 @@ Free Hong Kong→天安门屠杀→中国言论钳制→中共文字狱→
         {{/each}}</div></div>
       </div></div>
 
-<script src="http://d3js.org/d3.v4.min.js"></script>
-<script src="http://techanjs.org/techan.min.js"></script>
+<script src="https://d3js.org/d3.v4.min.js"></script>
+<script src="https://techanjs.org/techan.min.js"></script>
 <script>
 
     var margin = {top: 20, right: 50, bottom: 30, left: 50},