diff --git a/CHANGELOG.md b/CHANGELOG.md
index d873fe1..60a20be 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@
 - Add a property to the URL node indicating whether it was enclosed in `<>`. (#69)
 - Disallows `<` and `>` in hashtags. (#74)
 - Mentions in the link label are parsed as text. (#66)
+- Improves security.
 
 ### :gem: Features
 - Add tag syntaxes of bold and strikethrough. (#76)