Here are instructions on how to Update to the latest version of GIMP. This is vital to make sure you get the newest and best features for GIMP. The old versions of gimp that come bundled with Ubuntu 18 and prior aren’t nearly as good as Gimp 2.10+.
Start by launching terminal and adding the GIMP repository
sudo add-apt-repository ppa:otto-kesselgulasch/gimp
Verify the apt updates and if it doesn’t run the following command
sudo apt-get update
Now simply install GIMP and it will automatically update to the latest version of GIMP from now on
sudo apt-get install gimp
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