diff --git a/profiles/arch/s390/package.use.mask b/profiles/arch/s390/package.use.mask
index 2cb5bfbce7a64..91321b25d42d5 100644
--- a/profiles/arch/s390/package.use.mask
+++ b/profiles/arch/s390/package.use.mask
@@ -1,6 +1,10 @@
 # Copyright 1999-2022 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
+# Sam James <sam@gentoo.org> (2022-04-26)
+# Avoid unkeyworded sci-libs/umfpack
+dev-python/scipy sparse
+
 # Sam James <sam@gentoo.org> (2022-04-26)
 # Avoid unkeyworded media-gfx/libimagequant
 dev-python/pillow imagequant