diff --git a/CHANGELOG.md b/CHANGELOG.md
index 81fb05f0..49e8c758 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@ Features (notes)
 - optimize recursive functions using C iteration
 - combine lambda functions that are only called for side effects.
 - improve inlining of primitives that work with immutable objects.
+- EXPERIMENTAL - Added a new feature `program` to `cond-expand` that is only defined when compiling a program. TODO: what about icyc?
+
 
 Bug Fixes