diff --git a/CHANGELOG.md b/CHANGELOG.md
index f8f15db..48b029e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -74,7 +74,7 @@ unreleased
 
 1.0.0 / 2016-09-15
 ------------------
-なんかもうめっちゃ変えた
+**[BREAKING CHANGE] なんかもうめっちゃ変えた**
 
 0.0.1 / 2016-09-13
 ------------------