diff --git a/dev-python/nbconvert/nbconvert-6.5.0-r2.ebuild b/dev-python/nbconvert/nbconvert-6.5.0-r2.ebuild
index 171e7a133509e..466b5a9ca1216 100644
--- a/dev-python/nbconvert/nbconvert-6.5.0-r2.ebuild
+++ b/dev-python/nbconvert/nbconvert-6.5.0-r2.ebuild
@@ -20,7 +20,7 @@ SRC_URI="
 
 LICENSE="BSD"
 SLOT="0"
-KEYWORDS="~amd64 ~arm ~arm64 ~riscv ~x86"
+KEYWORDS="~amd64 ~arm ~arm64 ~riscv ~s390 ~x86"
 
 RDEPEND="
 	dev-python/beautifulsoup4[${PYTHON_USEDEP}]