diff --git a/dislocker.py b/dislocker.py
index 353b06a..6ba28f5 100644
--- a/dislocker.py
+++ b/dislocker.py
@@ -52,12 +52,12 @@ class DL():
                     }
                 }
 
-                with open(self.server_config_path, "w") as w:
-                    json.dump(self.server_config, w, indent=4)
+                with open(self.server_config_path, "w", encoding="utf-8") as w:
+                    json.dump(self.server_config, w, indent=4, ensure_ascii=False)
 
 
             elif os.path.isfile(self.server_config_path):
-                with open(self.server_config_path, "r") as r:
+                with open(self.server_config_path, "r", encoding="utf-8") as r:
                     self.server_config = json.load(r)
                     print("config ファイルを読み込みました。")