$ stack upgrade
Current Stack version: 1.5.1, available download version: 2.1.3
Newer version detected, downloading
Querying for archive location for platform: linux-x86_64-static
Downloading from: https://github.com/commercialhaskell/stack/releases/download/v2.1.3/stack-2.1.3-linux-x86_64-static.tar.gz
Download complete, testing executable
Version 2.1.3, Git revision 636e3a759d51127df2b62f90772def126cdf6d1f (7735 commits) x86_64 hpack-0.31.2
WARNING: Installation path /home/timetochange/.local/bin not found on the PATH environment variable
New stack executable available at /home/timetochange/.local/bin/stack