diff -Naur a/tuna/config.py b/tuna/config.py
--- a/tuna/config.py	2024-02-01 18:10:44.585908504 +0800
+++ b/tuna/config.py	2024-02-01 19:17:26.076908504 +0800
@@ -1,8 +1,11 @@
 import io, os, re, fnmatch
-import sys, gtk
+import sys
 import codecs, configparser
 from time import localtime, strftime
 from subprocess import Popen, PIPE, STDOUT, call
+import gi
+gi.require_version("Gtk", "3.0")
+from gi.repository import Gtk
 TUNED_CONF="""[sysctl]\n"""
 
 class Config: