Problem with Glade VCP install

Hello Guys, how are you?

Iam using linuxcnc-2.8.4-buster version

I tried to install glade VCP i used this commands:

sudo apt update
sudo apt upgrade
sudo apt install glade

But it installed a old version of Glade(3.22.1)

How Can I install a newer version?

I'm afraid you may be out of luck trying to upgrade beyond 3.22.1 on buster. Debian 11 (Bullseye) seems to come with version 3.38.2:
debian.pkgs.org/11/debian-main-amd64/gla...8.2-2_amd64.deb.html