diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3798e26..9d7f370 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 - Allow user to specify AST node name prefix or suffix
 - Allow specifying the start rule name
+- Allow rule terms to be marked as optional
 
 ## v1.3.0