diff --git a/users/key.json b/users/key.json
new file mode 100644
index 00000000..f1e8a938
--- /dev/null
+++ b/users/key.json
@@ -0,0 +1 @@
+{"copyright":"Mitsukuni Sato","url":"http:\/\/mitsukuni.org","email":"mitsukuni.sato@gmail.com","format":"html","gravatar":true,"theme":"preview"}
\ No newline at end of file