diff --git a/doc/source/drivers/github.rst b/doc/source/drivers/github.rst
index 8ebd9459be..b7a331882e 100644
--- a/doc/source/drivers/github.rst
+++ b/doc/source/drivers/github.rst
@@ -412,8 +412,8 @@ the following options.
 
       This is only used for ``pull_request_review`` events.  It
       accepts a list of strings each of which is matched to the review
-      state, which can be one of ``approved``, ``comment``, or
-      ``request_changes``.
+      state, which can be one of ``approved``, ``comment``,
+      ``changes_requested``, ``dismissed``, or ``pending``.
 
    .. attr:: status
 
diff --git a/zuul/driver/github/githubtrigger.py b/zuul/driver/github/githubtrigger.py
index e115691d3c..12fa5c7f27 100644
--- a/zuul/driver/github/githubtrigger.py
+++ b/zuul/driver/github/githubtrigger.py
@@ -181,6 +181,17 @@ def getNewSchema():
         'branch': scalar_or_list(vs.Any(ZUUL_REGEX, str)),
     })
 
+    # The docs for this are at:
+    # https://docs.github.com/en/webhooks/webhook-events-and-payloads?actionType=dismissed#pull_request_review
+    # They specify "dismissed, approved, changes_requested"
+    # But we have also experimentally seen "commented"
+    # The graphql docs are at:
+    # https://docs.github.com/en/enterprise-server@3.12/graphql/reference/enums#pullrequestreviewstate
+    # And they additionally specify "commented" and "pending".
+    # It's unclear whether "pending" can show up in the webhook (it
+    # may only appear in a graphql query of a user's own unsaved
+    # reviews) but since we've seen the extra "commented" value, let's
+    # be generous and accept "pending" as well.
     pull_request_review_schema = pull_request_review_base_schema.extend({
         'action': scalar_or_list(vs.Any('submitted', 'dismissed')),
         'state': scalar_or_list(vs.Any(