diff --git a/build_library/test_image_content.sh b/build_library/test_image_content.sh
index b3c862efbd..c7abcb6c3f 100644
--- a/build_library/test_image_content.sh
+++ b/build_library/test_image_content.sh
@@ -4,6 +4,7 @@
 
 GLSA_ALLOWLIST=(
 	201412-09 # incompatible CA certificate version numbers
+	202407-05 # ebuild of sys-auth/sssd already has a custom patch to fix CVE-2021-3621
 )
 
 glsa_image() {