diff --git a/Doc/release_note_en.md b/Doc/release_note_en.md
index 3524b6cb..6fc4004f 100644
--- a/Doc/release_note_en.md
+++ b/Doc/release_note_en.md
@@ -1,3 +1,8 @@
+NYAGOS 4.0.9\_6
+===============
+* Fixed nyagos.stat(nil) caused a panic.
+* Fixed not all stack trace was printed when a panic was recovered.
+
 NYAGOS 4.0.9\_5
 ===============
 * Add ls-option -S (Sort by Size) and -h (Print size with human-readable format)
diff --git a/Doc/release_note_ja.md b/Doc/release_note_ja.md
index df19a069..d4e2f3aa 100644
--- a/Doc/release_note_ja.md
+++ b/Doc/release_note_ja.md
@@ -1,3 +1,8 @@
+NYAGOS 4.0.9\_6
+===============
+* 【蟲繕】nyagos.stat(nil) で panic が発生していた
+* 【蟲繕】recover できた panic でスタックトレースが表示されなかった
+
 NYAGOS 4.0.9\_5
 ===============
 * ls のオプション：-S (サイズでソート)、-h (単位付きサイズ表記)を追加
diff --git a/Misc/version.txt b/Misc/version.txt
index 28da7cb0..06d9d402 100644
--- a/Misc/version.txt
+++ b/Misc/version.txt
@@ -1 +1 @@
-4.0.9_5
+4.0.9_6