diff --git a/TODO.md b/TODO.md
index b9fd1da..a6c0d68 100644
--- a/TODO.md
+++ b/TODO.md
@@ -16,6 +16,7 @@
 - [ ] Write unit/quickcheck tests for all of the instructions
 - [ ] Use template haskell to generate function lists
 - [X] Move utility functions to their own file
+- [ ] Make add/sub/mult/div/mod instructions generic
 
 ## PushGP TODO
 - [ ] Implement a Plushy genome translator