diff --git a/dev-lang/ada-bootstrap/ada-bootstrap-11.ebuild b/dev-lang/ada-bootstrap/ada-bootstrap-11.ebuild
index 007674c776a24..49c84f2f94bd9 100644
--- a/dev-lang/ada-bootstrap/ada-bootstrap-11.ebuild
+++ b/dev-lang/ada-bootstrap/ada-bootstrap-11.ebuild
@@ -64,7 +64,7 @@ S=${WORKDIR}
 
 LICENSE="GPL-2 GPL-3"
 SLOT="0"
-KEYWORDS="-* amd64 arm arm64 ~hppa ppc ppc64 ~riscv ~sparc"
+KEYWORDS="-* amd64 arm arm64 ~hppa ppc ppc64 ~riscv ~s390 ~sparc"
 
 RDEPEND="
 	>=dev-libs/gmp-4.3.2:0/10.4
diff --git a/dev-lang/ada-bootstrap/ada-bootstrap-12.ebuild b/dev-lang/ada-bootstrap/ada-bootstrap-12.ebuild
index eda769b06e447..7fd254bec7a1c 100644
--- a/dev-lang/ada-bootstrap/ada-bootstrap-12.ebuild
+++ b/dev-lang/ada-bootstrap/ada-bootstrap-12.ebuild
@@ -64,7 +64,7 @@ S=${WORKDIR}
 
 LICENSE="GPL-2 GPL-3"
 SLOT="0"
-KEYWORDS="-* amd64 arm arm64 ~hppa ppc ppc64 ~riscv ~sparc"
+KEYWORDS="-* amd64 arm arm64 ~hppa ppc ppc64 ~riscv ~s390 ~sparc"
 IUSE="prefix"
 
 RDEPEND="
diff --git a/dev-lang/ada-bootstrap/ada-bootstrap-13.ebuild b/dev-lang/ada-bootstrap/ada-bootstrap-13.ebuild
index eda769b06e447..7fd254bec7a1c 100644
--- a/dev-lang/ada-bootstrap/ada-bootstrap-13.ebuild
+++ b/dev-lang/ada-bootstrap/ada-bootstrap-13.ebuild
@@ -64,7 +64,7 @@ S=${WORKDIR}
 
 LICENSE="GPL-2 GPL-3"
 SLOT="0"
-KEYWORDS="-* amd64 arm arm64 ~hppa ppc ppc64 ~riscv ~sparc"
+KEYWORDS="-* amd64 arm arm64 ~hppa ppc ppc64 ~riscv ~s390 ~sparc"
 IUSE="prefix"
 
 RDEPEND="
diff --git a/dev-lang/ada-bootstrap/ada-bootstrap-14.ebuild b/dev-lang/ada-bootstrap/ada-bootstrap-14.ebuild
index c734afc7301c7..155db0c7d943b 100644
--- a/dev-lang/ada-bootstrap/ada-bootstrap-14.ebuild
+++ b/dev-lang/ada-bootstrap/ada-bootstrap-14.ebuild
@@ -67,7 +67,7 @@ S=${WORKDIR}
 
 LICENSE="GPL-2 GPL-3"
 SLOT="0"
-KEYWORDS="-* amd64 arm arm64 ~hppa ~loong ppc ppc64 ~riscv ~sparc"
+KEYWORDS="-* amd64 arm arm64 ~hppa ~loong ppc ppc64 ~riscv ~s390 ~sparc"
 IUSE="prefix"
 
 RDEPEND="