diff --git a/.github/workflows/portage-stable-packages-list b/.github/workflows/portage-stable-packages-list
index ba8edc659d..0ff3a4211e 100644
--- a/.github/workflows/portage-stable-packages-list
+++ b/.github/workflows/portage-stable-packages-list
@@ -179,6 +179,7 @@ app-shells/gentoo-bashcomp
 app-text/asciidoc
 app-text/build-docbook-catalog
 app-text/docbook-xml-dtd
+app-text/docbook-xsl-ns-stylesheets
 app-text/docbook-xsl-stylesheets
 app-text/mandoc
 app-text/manpager