diff --git a/sdk_container/src/third_party/portage-stable/sys-devel/automake-wrapper/automake-wrapper-20221207.ebuild b/sdk_container/src/third_party/portage-stable/sys-devel/automake-wrapper/automake-wrapper-20221207.ebuild
index 3d3779ad5b..6983b29ed5 100644
--- a/sdk_container/src/third_party/portage-stable/sys-devel/automake-wrapper/automake-wrapper-20221207.ebuild
+++ b/sdk_container/src/third_party/portage-stable/sys-devel/automake-wrapper/automake-wrapper-20221207.ebuild
@@ -3,6 +3,8 @@
 
 EAPI=8
 
+# Remember to modify LAST_KNOWN_AUTOAKE_VER 'upstream' on new automake (major) releases!
+
 MY_P="autotools-wrappers-at-${PV}"
 
 DESCRIPTION="Wrapper for automake to manage multiple automake versions"
diff --git a/sdk_container/src/third_party/portage-stable/sys-devel/automake-wrapper/automake-wrapper-99999999.ebuild b/sdk_container/src/third_party/portage-stable/sys-devel/automake-wrapper/automake-wrapper-99999999.ebuild
index aa02b4b706..5cc8b5d149 100644
--- a/sdk_container/src/third_party/portage-stable/sys-devel/automake-wrapper/automake-wrapper-99999999.ebuild
+++ b/sdk_container/src/third_party/portage-stable/sys-devel/automake-wrapper/automake-wrapper-99999999.ebuild
@@ -3,6 +3,8 @@
 
 EAPI=8
 
+# Remember to modify LAST_KNOWN_AUTOAKE_VER 'upstream' on new automake (major) releases!
+
 MY_P="autotools-wrappers-at-${PV}"
 
 DESCRIPTION="Wrapper for automake to manage multiple automake versions"