diff --git a/RELEASE.md b/RELEASE.md
index fb14bc56a..9e22d8626 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -330,6 +330,13 @@ its source and workflow, while GitHub still permits the rerun; do not replay the
 obsolete backlog. Verify the generated PR's source ancestry after refresh, too:
 the approved run's revision does not freeze release-please's reads of `main`.
 
+An authoring run left waiting for approval holds the release concurrency group,
+so every later push queues behind it. Once 100 runs are pending, the queue is
+full and GitHub does not admit further `Release` runs. Each one appears as a
+failed run with zero jobs, and GitHub reports that it likely failed because of a
+workflow file issue. Before debugging the workflow file, look for a `Release`
+run in the `waiting` state and apply the cleanup above.
+
 ### Artifact publication
 
 Retain release build artifacts for at least 30 days. Normal recovery reruns