diff --git a/dev-python/attrs/attrs-21.4.0.ebuild b/dev-python/attrs/attrs-21.4.0.ebuild
index 2199097928221..e99fdc790a49f 100644
--- a/dev-python/attrs/attrs-21.4.0.ebuild
+++ b/dev-python/attrs/attrs-21.4.0.ebuild
@@ -16,7 +16,7 @@ SRC_URI="mirror://pypi/${P:0:1}/${PN}/${P}.tar.gz"
 
 LICENSE="MIT"
 SLOT="0"
-KEYWORDS="~alpha amd64 arm arm64 hppa ~ia64 ~m68k ~mips ppc ppc64 ~riscv ~s390 sparc x86 ~amd64-linux ~x86-linux"
+KEYWORDS="~alpha amd64 arm arm64 hppa ~ia64 ~m68k ~mips ppc ppc64 ~riscv ~s390 sparc x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
 
 RDEPEND="
 	dev-python/zope-interface[${PYTHON_USEDEP}]"