diff --git a/readme.md b/readme.md
index c30d927..6caaa51 100644
--- a/readme.md
+++ b/readme.md
@@ -1,6 +1,6 @@
 [![Build Status](https://travis-ci.org/herumi/xbyak.png)](https://travis-ci.org/herumi/xbyak)
 
-# Xbyak 5.96 ; JIT assembler for x86(IA32), x64(AMD64, x86-64) by C++
+# Xbyak 5.97 ; JIT assembler for x86(IA32), x64(AMD64, x86-64) by C++
 
 ## Abstract
 
@@ -438,6 +438,7 @@
 http://opensource.org/licenses/BSD-3-Clause
 
 ## History
+* 2020/Sep/08 ver 5.97 replace uint32 with uint32_t etc.
 * 2020/Aug/28 ver 5.95 some constructors of register classes support constexpr if C++14 or later
 * 2020/Aug/04 ver 5.941 `CodeGenerator::reset()` calls `ClearError()`.
 * 2020/Jul/28 ver 5.94 remove #include <winsock2.h> (only windows)
diff --git a/readme.txt b/readme.txt
index bb66d57..dcbff9e 100644
--- a/readme.txt
+++ b/readme.txt
@@ -1,5 +1,5 @@
 
-    C++用x86(IA-32), x64(AMD64, x86-64) JITアセンブラ Xbyak 5.96
+    C++用x86(IA-32), x64(AMD64, x86-64) JITアセンブラ Xbyak 5.97
 
 -----------------------------------------------------------------------------
 ◎概要
@@ -379,6 +379,7 @@
 -----------------------------------------------------------------------------
 ◎履歴
 
+2020/09/08 ver 5.97 uint32などをuint32_tに置換
 2020/08/28 ver 5.95 レジスタクラスのコンストラクタがconstexprに対応(C++14以降)
 2020/08/04 ver 5.941 `CodeGenerator::reset()`が`ClearError()`を呼ぶように変更
 2020/07/28 ver 5.94 #include <winsock2.h>の削除 (only windows)