diff --git a/cmd/pttodo-cli/cli.go b/cmd/pttodo-cli/cli.go
index 68d053c..e651160 100644
--- a/cmd/pttodo-cli/cli.go
+++ b/cmd/pttodo-cli/cli.go
@@ -168,5 +168,9 @@ func dump(dry bool, writer io.Writer, filepath string) error {
 		return nil
 	}
 
-	return os.WriteFile(filepath, b2, os.ModePerm)
+	b3, err := yaml.Marshal(root)
+	if err != nil {
+		return err
+	}
+	return os.WriteFile(filepath, b3, os.ModePerm)
 }