diff --git a/README.md b/README.md
index a1d1de9..1c322a4 100644
--- a/README.md
+++ b/README.md
@@ -620,6 +620,17 @@ Since version *3.0.13* AASM supports ActiveRecord transactions. So whenever a tr
 callback or the state update fails, all changes to any database record are rolled back.
 Mongodb does not support transactions.
 
+There are currently 3 transactional callbacks that can be handled on the event, and 2 transactional callbacks for all events.
+
+```ruby
+  event           before_all_transactions
+  event           before_transaction
+  event           aasm_fire_event (within transaction)
+  event           after_commit (if event successful)
+  event           after_transaction
+  event           after_all_transactions
+```
+
 If you want to make sure a depending action happens only after the transaction is committed,
 use the `after_commit` callback, like this: