diff --git a/compiler/TODO b/compiler/TODO
index dedb2b05..30a6d72c 100644
--- a/compiler/TODO
+++ b/compiler/TODO
@@ -34,4 +34,6 @@ remove the dependency on the clock period.
 Remove duplicate clock inverter in MS flop.
 
 Make lib file have delay relative to negedge for DATA. Must update
-timing code too.
\ No newline at end of file
+timing code too.
+
+Convert characterizer into a Python package
\ No newline at end of file