diff --git a/src/server/api/endpoints/drive/files/attached_notes.ts b/src/server/api/endpoints/drive/files/attached-notes.ts
similarity index 100%
rename from src/server/api/endpoints/drive/files/attached_notes.ts
rename to src/server/api/endpoints/drive/files/attached-notes.ts
diff --git a/src/server/api/endpoints/drive/files/check_existence.ts b/src/server/api/endpoints/drive/files/check-existence.ts
similarity index 100%
rename from src/server/api/endpoints/drive/files/check_existence.ts
rename to src/server/api/endpoints/drive/files/check-existence.ts
diff --git a/src/server/api/endpoints/drive/files/upload_from_url.ts b/src/server/api/endpoints/drive/files/upload-from-url.ts
similarity index 100%
rename from src/server/api/endpoints/drive/files/upload_from_url.ts
rename to src/server/api/endpoints/drive/files/upload-from-url.ts
diff --git a/src/server/api/endpoints/i/authorized_apps.ts b/src/server/api/endpoints/i/authorized-apps.ts
similarity index 100%
rename from src/server/api/endpoints/i/authorized_apps.ts
rename to src/server/api/endpoints/i/authorized-apps.ts
diff --git a/src/server/api/endpoints/i/change_password.ts b/src/server/api/endpoints/i/change-password.ts
similarity index 100%
rename from src/server/api/endpoints/i/change_password.ts
rename to src/server/api/endpoints/i/change-password.ts
diff --git a/src/server/api/endpoints/i/read_all_messaging_messages.ts b/src/server/api/endpoints/i/read-all-messaging-messages.ts
similarity index 100%
rename from src/server/api/endpoints/i/read_all_messaging_messages.ts
rename to src/server/api/endpoints/i/read-all-messaging-messages.ts
diff --git a/src/server/api/endpoints/i/read_all_unread_notes.ts b/src/server/api/endpoints/i/read-all-unread-notes.ts
similarity index 100%
rename from src/server/api/endpoints/i/read_all_unread_notes.ts
rename to src/server/api/endpoints/i/read-all-unread-notes.ts
diff --git a/src/server/api/endpoints/i/regenerate_token.ts b/src/server/api/endpoints/i/regenerate-token.ts
similarity index 100%
rename from src/server/api/endpoints/i/regenerate_token.ts
rename to src/server/api/endpoints/i/regenerate-token.ts
diff --git a/src/server/api/endpoints/i/signin_history.ts b/src/server/api/endpoints/i/signin-history.ts
similarity index 100%
rename from src/server/api/endpoints/i/signin_history.ts
rename to src/server/api/endpoints/i/signin-history.ts
diff --git a/src/server/api/endpoints/i/update_client_setting.ts b/src/server/api/endpoints/i/update-client-setting.ts
similarity index 100%
rename from src/server/api/endpoints/i/update_client_setting.ts
rename to src/server/api/endpoints/i/update-client-setting.ts
diff --git a/src/server/api/endpoints/i/update_email.ts b/src/server/api/endpoints/i/update-email.ts
similarity index 100%
rename from src/server/api/endpoints/i/update_email.ts
rename to src/server/api/endpoints/i/update-email.ts
diff --git a/src/server/api/endpoints/i/update_home.ts b/src/server/api/endpoints/i/update-home.ts
similarity index 100%
rename from src/server/api/endpoints/i/update_home.ts
rename to src/server/api/endpoints/i/update-home.ts
diff --git a/src/server/api/endpoints/i/update_mobile_home.ts b/src/server/api/endpoints/i/update-mobile-home.ts
similarity index 100%
rename from src/server/api/endpoints/i/update_mobile_home.ts
rename to src/server/api/endpoints/i/update-mobile-home.ts
diff --git a/src/server/api/endpoints/i/update_widget.ts b/src/server/api/endpoints/i/update-widget.ts
similarity index 100%
rename from src/server/api/endpoints/i/update_widget.ts
rename to src/server/api/endpoints/i/update-widget.ts
diff --git a/src/server/api/endpoints/notes/search_by_tag.ts b/src/server/api/endpoints/notes/search-by-tag.ts
similarity index 100%
rename from src/server/api/endpoints/notes/search_by_tag.ts
rename to src/server/api/endpoints/notes/search-by-tag.ts
diff --git a/src/server/api/endpoints/notifications/mark_all_as_read.ts b/src/server/api/endpoints/notifications/mark-all-as-read.ts
similarity index 100%
rename from src/server/api/endpoints/notifications/mark_all_as_read.ts
rename to src/server/api/endpoints/notifications/mark-all-as-read.ts
diff --git a/src/server/api/endpoints/users/get_frequently_replied_users.ts b/src/server/api/endpoints/users/get-frequently-replied-users.ts
similarity index 100%
rename from src/server/api/endpoints/users/get_frequently_replied_users.ts
rename to src/server/api/endpoints/users/get-frequently-replied-users.ts
diff --git a/src/server/api/index.ts b/src/server/api/index.ts
index 6c523a9d4..fac57ca06 100644
--- a/src/server/api/index.ts
+++ b/src/server/api/index.ts
@@ -51,6 +51,10 @@ for (const endpoint of endpoints) {
 	if (endpoint.meta.requireFile) {
 		router.post(`/${endpoint.name}`, upload.single('file'), handler.bind(null, endpoint));
 	} else {
+		if (endpoint.name.includes('-')) {
+			// 後方互換性のため
+			router.post(`/${endpoint.name.replace(/\-/g, '_')}`, handler.bind(null, endpoint));
+		}
 		router.post(`/${endpoint.name}`, handler.bind(null, endpoint));
 	}
 }