diff --git a/CHANGELOG.md b/CHANGELOG.md
index 50916f9..4cb1494 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ Released: -
 
 ```
 * [New] Add Pico's social icons to default theme
+* [Changed] Add CSS flexbox rules to default theme
 * [Fixed] Fix handling of non-YAML 1-line front matters
 * [Fixed] Fix responsiveness in default theme
 ```