diff --git a/content/en/docs/23.0/concepts/query-rewriting.md b/content/en/docs/23.0/concepts/query-rewriting.md
index 6d8c7c417..9d573c188 100644
--- a/content/en/docs/23.0/concepts/query-rewriting.md
+++ b/content/en/docs/23.0/concepts/query-rewriting.md
@@ -104,6 +104,7 @@ Here is a list of all the system variables that are handled by Vitess and how th
 | query_timeout                           | VitessAware    |
 | transaction_isolation                   | VitessAware    |
 | tx_isolation                            | VitessAware    |
+| transaction_timeout                     | VitessAware    |
 | big_tables                              | NoOp           |
 | bulk_insert_buffer_size                 | NoOp           |
 | debug                                   | NoOp           |