diff --git a/CHANGELOG-Japanese.md b/CHANGELOG-Japanese.md
index c56055ee..d0a2877d 100644
--- a/CHANGELOG-Japanese.md
+++ b/CHANGELOG-Japanese.md
@@ -1,4 +1,10 @@
-# 初期リリース
+# CHANGELOG
+
+## 2.0.0 [2025/11/16] - CODE BLUE リリース
+
+**バグ修正:**
+
+- ルールカウントの一部が正確ではなかった。 (#99) (@fukusuket)
 
 ## 1.0.0 [2025/05/20] - AUSCERT/SINCON リリース
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0b0f2c1e..d565fa23 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,10 @@
-# Initial Release
+# CHANGELOG
+
+## 2.0.0 [2025/11/16] - CODE BLUE Release
+
+**Bug Fixes:**
+
+- Some of the rule count was not accurate. (#99) (@fukusuket)
 
 ## 1.0.0 [2025/05/20] - AUSCERT/SINCON Release