diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8b523826..f9038f81 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,6 +12,8 @@ name: CI
 
 on:
   pull_request:
+  # The merge queue: each queued group runs the full suite before it lands on main.
+  merge_group:
   push:
     branches: [main]
   schedule: