Version 2.2.1 is available upstream. Please consider updating!
It seems that version 2.2.1 is available upstream, while the latest version in the Gentoo tree is 2.1.1-r5.
You think this warning is false? Read more about it here.

Available Versions

Versionamd64x86alphaarmarm64hppaia64ppcppc64riscvsparc
2.1.1-r5  : 0 T EAPI 8 amd64 x86?alpha arm arm64?hppa?ia64?ppc ppc64 ~riscv?sparc

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