diff --git a/.gitea/workflows/sop-tier-check.yml b/.gitea/workflows/sop-tier-check.yml
index d4b74ed3..93b820e7 100644
--- a/.gitea/workflows/sop-tier-check.yml
+++ b/.gitea/workflows/sop-tier-check.yml
@@ -96,5 +96,12 @@ jobs:
           SOP_DEBUG: '0'
           # BURN-IN: set to '1' for PRs in-flight at AND-composition deploy
           # time to use the legacy OR-gate. Remove after 2026-05-17.
-          SOP_LEGACY_CHECK: '0'
+          #
+          # 2026-05-10 update: the AND-composition rollout (PR #225) is
+          # blocking valid PRs (issue #229) — APPROVER_TEAMS map probe
+          # appears to fail despite confirmed-eligible approvers.
+          # Flipping to legacy OR-gate temporarily so the merge queue can
+          # drain while #229 is diagnosed. Remove this override once #229
+          # ships a fix and PR #225's AND-composition is verified working.
+          SOP_LEGACY_CHECK: '1'
         run: bash .gitea/scripts/sop-tier-check.sh