diff --git a/sdk_container/src/third_party/portage-stable/eclass/libtool.eclass b/sdk_container/src/third_party/portage-stable/eclass/libtool.eclass
index 18596a9223..de5656bfd2 100644
--- a/sdk_container/src/third_party/portage-stable/eclass/libtool.eclass
+++ b/sdk_container/src/third_party/portage-stable/eclass/libtool.eclass
@@ -4,7 +4,7 @@
 # @ECLASS: libtool.eclass
 # @MAINTAINER:
 # base-system@gentoo.org
-# @SUPPORTED_EAPIS: 7 8
+# @SUPPORTED_EAPIS: 7 8 9
 # @BLURB: quickly update bundled libtool code
 # @DESCRIPTION:
 # This eclass patches ltmain.sh distributed with libtoolized packages with the
@@ -18,7 +18,7 @@ if [[ -z ${_LIBTOOL_ECLASS} ]]; then
 _LIBTOOL_ECLASS=1
 
 case ${EAPI} in
-	7|8) ;;
+	7|8|9) ;;
 	*) die "${ECLASS}: EAPI ${EAPI:-0} not supported" ;;
 esac