The first release of the Go buildpack after March 1, 2019 will no longer include any versions of Go 1.8.x or 1.9.x. These Go versions are no longer supported upstream [1]. Please migrate your Go apps to supported versions of Go before that time.

Note: Unless you are manually specifying a version of Go for the buildpack to use, or you have customized your Go buildpack, no action is required.

[1] https://golang.org/doc/devel/release.html

Thanks,

Elliott Shanks, CF Buildpacks PM