diff --git a/TODO b/TODO
index 9a605de..a9b4bec 100644
--- a/TODO
+++ b/TODO
@@ -5,6 +5,7 @@
 # Cleanups
 - Improve error reporting (See ./util/string_util::highlight_position_in_file)
 - Use .peek() instead of .next() for expression parsing
+- `x: int` notation is used in multiple places. Can potentially be consolidated
 - stdlib moves line of file, which makes error reporting impossible
 
 # Features