diff --git a/history.en.md b/history.en.md
index 50106bb0d..ca1f1681b 100644
--- a/history.en.md
+++ b/history.en.md
@@ -1,8 +1,10 @@
 # History
 
  - master/HEAD
+   * Fix odd appearance of the Photon theme. (regression on 3.8.5)
+   * Calculate total height of visible tabs more safely.
  - 3.8.6 (2021.7.7)
-   * Fix visual corruption on very old versions of Firefox. (regression on  3.8.5)
+   * Fix visual corruption on very old versions of Firefox. (regression on 3.8.5)
  - 3.8.5 (2021.7.6)
    * Breaking change around DOM structure of tabs:
        * Each tab now has `tab-item-substance` as a mid-level container between `tab-item` and tab content elements like `tab-favicon`.
diff --git a/history.ja.md b/history.ja.md
index b4c7c522c..e4da04449 100644
--- a/history.ja.md
+++ b/history.ja.md
@@ -1,6 +1,8 @@
 # 更新履歴
 
  - master/HEAD
+   * Photonテーマの外観がおかしくなっていたのを修正（3.8.5での後退バグ）
+   * タブの高さの合計をより安全に計算するように修正
  - 3.8.6 (2021.7.7)
    * 非常に古いバージョンで表示が崩れる問題を修正（3.8.5での後退バグ）
  - 3.8.5 (2021.7.6)