diff --git a/guides/source/active_record_callbacks.md b/guides/source/active_record_callbacks.md
index 8d4e96ba2776a7da7d011eb56dd8070a02b74f4c..3cc2c5dc1a385639016d483670856794343f7312 100644
--- a/guides/source/active_record_callbacks.md
+++ b/guides/source/active_record_callbacks.md
@@ -246,6 +246,7 @@ Just as with validations, it is also possible to skip callbacks by using the fol
 * `decrement_counter`
 * `delete`
 * `delete_all`
+* `delete_by`
 * `increment!`
 * `increment_counter`
 * `insert`