diff --git a/compiler/TODO b/compiler/TODO
index 4124ca20..dedb2b05 100644
--- a/compiler/TODO
+++ b/compiler/TODO
@@ -31,4 +31,7 @@ Fix stimuli.py to be more readable.
 Change the delay measurement to be from the negative clock edge to 
 remove the dependency on the clock period.
 
-Remove duplicate clock inverter in MS flop.
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+Remove duplicate clock inverter in MS flop.
+
+Make lib file have delay relative to negedge for DATA. Must update
+timing code too.
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