diff --git a/cmd/joj3/conf.go b/cmd/joj3/conf.go
index d5b9d70..13ebb4d 100644
--- a/cmd/joj3/conf.go
+++ b/cmd/joj3/conf.go
@@ -108,7 +108,7 @@ func commitMsgToConf() (conf Conf, err error) {
 		return
 	}
 
-	file := "conf.toml"
+	file := "conf.json"
 
 	msg := commit.Message
 	slog.Debug("commit msg to conf", "msg", msg)