diff --git a/calculator_of_Onmyoji/server.conf b/calculator_of_Onmyoji/server.conf
index 1fb4097..d6422ea 100644
--- a/calculator_of_Onmyoji/server.conf
+++ b/calculator_of_Onmyoji/server.conf
@@ -1,3 +1,3 @@
 [global]
-host = 0.0.0.0
+host = 127.0.0.1
 port = 2019