diff --git a/repositories.tf b/repositories.tf
index e150c1e..702b23e 100644
--- a/repositories.tf
+++ b/repositories.tf
@@ -396,6 +396,9 @@ module "repo_osac_ui" {
   visibility  = "public"
   name        = "osac-ui"
   description = "OSAC UI Web Console"
+  # Merged into osac mono-repo, with full commit history preserved; archived.
+  archived    = true
+  lock_branch = true
   teams = [
     {
       team_id    = "fulfillment-wg"