diff --git a/TODO.md b/TODO.md
index c2bfeed..51cf8e9 100644
--- a/TODO.md
+++ b/TODO.md
@@ -8,4 +8,5 @@
 * ✅ Implement lexer loader that respects aliases
 * ✅ Implement lexer loader by file extension
 * ✅ Add --line-numbers to terminal formatter
-* Implement lexer loader by mime type
\ No newline at end of file
+* Implement lexer loader by mime type
+* Implement Delegating lexers
\ No newline at end of file