diff --git a/TODO.md b/TODO.md
index a623bea..ada00d6 100644
--- a/TODO.md
+++ b/TODO.md
@@ -8,5 +8,5 @@ In no particular order:
 - [ ] Anonymous functions
 - [ ] Lists
 - [ ] Maps
-- [ ] String formatting
+- [x] String formatting
 - [ ] Warnings
\ No newline at end of file