diff --git a/README.md b/README.md
index c8cb888..2c61faf 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,7 @@ USE REDIST 2013!
 
 ## TODO ✅:
 - [X] Config.
+- [X] Add support to use file as key.
 - [X] Binary files.
 - [X] Encrypt/Decrypt via AES.
 - [ ] Send files.