diff --git a/README.md b/README.md
index 4ba910d..27b7a10 100644
--- a/README.md
+++ b/README.md
@@ -25,8 +25,8 @@ objects).
 - Behavioral Patterns
  - [Chain of Responsibility], object that can fulfill a request
  - [Command], when and how a request is fulfilled
- - [Interpreter], todo
- - [Iterator], todo
+ - [Interpreter], grammar and interpretation of a language
+ - [Iterator], how an aggregate's elements are accessed
  - [Mediator], todo
  - [Memento], todo 
  - [Observer], todo