diff --git a/docs/TODO.md b/docs/TODO.md
index eae26f46..945add14 100644
--- a/docs/TODO.md
+++ b/docs/TODO.md
@@ -1,3 +1,4 @@
 
 - Add tests for tidyr from original tidyverse/tidyr cases
 - Add more tests for base/core
+- Port more functions from `r-base`, `r-stats`, etc