diff --git a/config/nginx.conf.erb b/config/nginx.conf.erb
index dc54585..2957f3b 100644
--- a/config/nginx.conf.erb
+++ b/config/nginx.conf.erb
@@ -457,6 +457,13 @@ http {
       proxy_pass https://hokurikurb.github.io;
     }
 
+    location /sendai03 {
+      include force_https.conf;
+      include github_pages.conf;
+      proxy_redirect https://sendairb.github.io/sendairk03 $map_request_proto://$http_host/sendai03;
+      proxy_pass https://sendairb.github.io;
+    }
+
     # regional.rubykaigi.org
     location / {
       include force_https.conf;