diff --git a/source/par1j/ReadMe1_English.txt b/source/par1j/ReadMe1_English.txt
index 732e438..ae69642 100644
--- a/source/par1j/ReadMe1_English.txt
+++ b/source/par1j/ReadMe1_English.txt
@@ -18,7 +18,7 @@ Parchive 1.0 client by Yutaka Sawada
  You cannot specify Non-Recovery-Set files. (Empty files are set.)
  Number of recovery files are limited to 99.
 
- This requires a PC of Windows Vista or later (Windows 7, 8, 10, 11).
+ This requires a PC of Windows 7 or later (Windows 8, 10, 11).
  This is developed with Visual Studio 2022 on Windows 10.
 
 
diff --git a/source/par1j/ReadMe1_Japanese.txt b/source/par1j/ReadMe1_Japanese.txt
index de720df..ca6c537 100644
--- a/source/par1j/ReadMe1_Japanese.txt
+++ b/source/par1j/ReadMe1_Japanese.txt
@@ -61,7 +61,7 @@ WinRAR 
 ソース・ブロックとパリティ・ブロックの合計は 256個までです。
 リカバリ・ファイルは最大で 99個までです。
 
-　動作環境は Windows Vista かそれ以降 (Windows 7, 8, 10, 11) が動くパソコンです。
+　動作環境は Windows 7 かそれ以降 (Windows 8, 10, 11) が動くパソコンです。
 Win32 API と VC ランタイムを使ってるので、
 ソース・コードをコンパイルするには Visual Studio 2022 以降が必要です。
 
diff --git a/source/par1j/common1.c b/source/par1j/common1.c
index 59487ce..02fc465 100644
--- a/source/par1j/common1.c
+++ b/source/par1j/common1.c
@@ -1,5 +1,5 @@
 �ｻｿ// common.c
-// Copyright : 2023-03-13 Yutaka Sawada
+// Copyright : 2024-11-30 Yutaka Sawada
 // License : GPL
 
 #ifndef _UNICODE
@@ -9,7 +9,7 @@
 #define UNICODE
 #endif
 #ifndef _WIN32_WINNT
-#define _WIN32_WINNT 0x0600	// Windows Vista or later
+#define _WIN32_WINNT 0x0601	// Windows 7 or later
 #endif
 
 #include <conio.h>
diff --git a/source/par1j/ini.c b/source/par1j/ini.c
index 4afa314..e6c2ad7 100644
--- a/source/par1j/ini.c
+++ b/source/par1j/ini.c
@@ -1,5 +1,5 @@
 �ｻｿ// ini.c
-// Copyright : 2022-01-15 Yutaka Sawada
+// Copyright : 2024-11-30 Yutaka Sawada
 // License : GPL
 
 #ifndef _UNICODE
@@ -9,7 +9,7 @@
 #define UNICODE
 #endif
 #ifndef _WIN32_WINNT
-#define _WIN32_WINNT 0x0600	// Windows Vista or later
+#define _WIN32_WINNT 0x0601	// Windows 7 or later
 #endif
 
 #include <malloc.h>
diff --git a/source/par1j/par1.c b/source/par1j/par1.c
index 31b18eb..622998c 100644
--- a/source/par1j/par1.c
+++ b/source/par1j/par1.c
@@ -1,5 +1,5 @@
 �ｻｿ// par1.c
-// Copyright : 2022-02-16 Yutaka Sawada
+// Copyright : 2024-11-30 Yutaka Sawada
 // License : GPL
 
 #ifndef _UNICODE
@@ -9,7 +9,7 @@
 #define UNICODE
 #endif
 #ifndef _WIN32_WINNT
-#define _WIN32_WINNT 0x0600	// Windows Vista or later
+#define _WIN32_WINNT 0x0601	// Windows 7 or later
 #endif
 
 #include <stdio.h>
diff --git a/source/par1j/par1_cmd.c b/source/par1j/par1_cmd.c
index 25539ba..469dcbb 100644
--- a/source/par1j/par1_cmd.c
+++ b/source/par1j/par1_cmd.c
@@ -1,5 +1,5 @@
 �ｻｿ// par1_cmd.c
-// Copyright : 2023-03-14 Yutaka Sawada
+// Copyright : 2024-11-30 Yutaka Sawada
 // License : GPL
 
 #ifndef _UNICODE
@@ -9,7 +9,7 @@
 #define UNICODE
 #endif
 #ifndef _WIN32_WINNT
-#define _WIN32_WINNT 0x0600	// Windows Vista or later
+#define _WIN32_WINNT 0x0601	// Windows 7 or later
 #endif
 
 #include <stdio.h>
diff --git a/source/par1j/res_par1j.rc b/source/par1j/res_par1j.rc
index 38ff851..23cff4f 100644
Binary files a/source/par1j/res_par1j.rc and b/source/par1j/res_par1j.rc differ
diff --git a/source/par1j/version.h b/source/par1j/version.h
index b3733a7..c72d767 100644
--- a/source/par1j/version.h
+++ b/source/par1j/version.h
@@ -1,2 +1,2 @@
-�ｻｿ#define FILE_VERSION "1.3.2.8"	// 繝輔ぃ繧､繝ｫ縺ｮ繝舌�ｼ繧ｸ繝ｧ繝ｳ逡ｪ蜿ｷ
-#define PRODUCT_VERSION 0x132	// 繧ｯ繝ｩ繧､繧｢繝ｳ繝医�ｮ繝舌�ｼ繧ｸ繝ｧ繝ｳ逡ｪ蜿ｷ
+�ｻｿ#define FILE_VERSION "1.3.3.4"	// 繝輔ぃ繧､繝ｫ縺ｮ繝舌�ｼ繧ｸ繝ｧ繝ｳ逡ｪ蜿ｷ
+#define PRODUCT_VERSION 0x133	// 繧ｯ繝ｩ繧､繧｢繝ｳ繝医�ｮ繝舌�ｼ繧ｸ繝ｧ繝ｳ逡ｪ蜿ｷ