diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1ceaa89e..8dfa9c3f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ Features
 
 - Improve garbage collector performance for large heaps.
 - Allow optimization of some simple self-recursive functions.
+- Generate faster compiled code for calls to `car`, `cdr`, and most built-in predicates.
 - Generate faster compiled code for calls to `list` that contain a small number of arguments, and for calls to `map` and `for-each` that only pass a single list.
 
 Bug Fixes