diff --git a/TODO.md b/TODO.md
index 46316ac..fa35c0d 100644
--- a/TODO.md
+++ b/TODO.md
@@ -30,6 +30,7 @@
       - Is the best according to the papers
   - [X] Need a NoOp that opens blocks
   - [ ] Have a way to balance amount of closes with open blocks
+    - Implement "balanced" closed PushArg
 - [ ] Need to make genomes serializable (Check pysh json files)
 - [ ] Add Memory
 - [ ] Add history stack(s), like a call stack