diff --git a/net-mail/notmuch/notmuch-0.31.2.ebuild b/net-mail/notmuch/notmuch-0.31.2.ebuild
index 7500212658338..26c459bf4d052 100644
--- a/net-mail/notmuch/notmuch-0.31.2.ebuild
+++ b/net-mail/notmuch/notmuch-0.31.2.ebuild
@@ -18,7 +18,7 @@ LICENSE="GPL-3"
 # Sub-slot corresponds to major wersion of libnotmuch.so.X.Y. Bump of Y is
 # meant to be binary backward compatible.
 SLOT="0/5"
-KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~ppc64 x86"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~ppc64 x86 ~x64-macos"
 REQUIRED_USE="
 	apidoc? ( doc )
 	nmbug? ( python )