Default Go version is now go1.20.14

Change effective on 28 February 2024

We’ve updated the default version for Go applications to go1.20.14. This change applies to Go apps that do not specify a Go version.

Go apps that specify a Go version via go.mod, vendor/vendor.json, Godeps/Godeps.json, or the GOVERSION environment variable will not be affected.

We highly suggest specifying a Go version to prevent default changes like these from disrupting your workflow. Please read our Heroku Go Support Article if you would like to do that.