diff --git a/_includes/contest-link.html b/_includes/contest-link.html
index 41486b0..2b4d6cd 100644
--- a/_includes/contest-link.html
+++ b/_includes/contest-link.html
@@ -1,6 +1,6 @@
 <div class="row mb-5">
   <div class="col-12 col-md-4 text-center mb-4">
-    <a class="btn btn__green btn-block btn__xl" href="mailto:dojocon2018@coderdojo.jp">問い合わせ</a>
+    <a class="btn btn__green btn-block btn__xl" href="https://docs.google.com/forms/d/e/1FAIpQLSd2J7JMSyeXBbTyP6I2uWStk0UbslgKsCBfjT-imneQmVuXWg/viewform" target="_blank">問い合わせ</a>
   </div>
   <div class="col-12 col-md-4 text-center mb-4">
     <a class="btn btn__green btn-block btn__xl" href="pdf/contestrule2018.pdf" target="_blank">参加資格</a>