diff --git a/cc-ci-plan/used-recipes.md b/cc-ci-plan/used-recipes.md
index 9caec23..a1efb07 100644
--- a/cc-ci-plan/used-recipes.md
+++ b/cc-ci-plan/used-recipes.md
@@ -28,7 +28,7 @@ lasuite-drive     weekly
 lasuite-meet      weekly
 mailu             weekly
 matrix-synapse    weekly
-mattermost-lts    weekly
+mattermost-lts    external   # maintained elsewhere — used/tested by cc-ci but NOT weekly-upgraded
 mumble            weekly
 n8n               weekly
 plausible         external   # maintained elsewhere — used/tested by cc-ci but NOT weekly-upgraded