diff --git a/setup/main.py b/setup/main.py
index 8ded4d3..3f153a5 100644
--- a/setup/main.py
+++ b/setup/main.py
@@ -45,6 +45,12 @@ def __init__(self, engine):
         locale.setlocale(locale.LC_ALL, "")
         localedir = os.getenv("IBUS_LOCALEDIR")
         gettext.bindtextdomain("ibus-pinyin", localedir)
+        # Python's gettext module doesn't provide all methods in
+        # new Python version since Python 3.10
+        try:
+            gettext.bind_textdomain_codeset("ibus-pinyin", "UTF-8")
+        except AttributeError:
+            pass
 
         self.__bus = IBus.Bus()
         self.__config = self.__bus.get_config()