diff --git a/doc/chm/VeraCrypt User Guide.chm b/doc/chm/VeraCrypt User Guide.chm
index 86753711..8f6bb993 100644
Binary files a/doc/chm/VeraCrypt User Guide.chm and b/doc/chm/VeraCrypt User Guide.chm differ
diff --git a/doc/chm/VeraCrypt User Guide.ru.chm b/doc/chm/VeraCrypt User Guide.ru.chm
index 7b102b9e..ba77f2d6 100644
Binary files a/doc/chm/VeraCrypt User Guide.ru.chm and b/doc/chm/VeraCrypt User Guide.ru.chm differ
diff --git a/doc/chm/VeraCrypt User Guide.zh-cn.chm b/doc/chm/VeraCrypt User Guide.zh-cn.chm
index 70532f55..b5552385 100644
Binary files a/doc/chm/VeraCrypt User Guide.zh-cn.chm and b/doc/chm/VeraCrypt User Guide.zh-cn.chm differ
diff --git a/doc/html/en/Release Notes.html b/doc/html/en/Release Notes.html
index 09fd6122..a865706a 100644
--- a/doc/html/en/Release Notes.html	
+++ b/doc/html/en/Release Notes.html	
@@ -40,11 +40,11 @@
 <span style="color:#ff0000;">To avoid hinting whether your volumes contain a hidden volume or not, or if you depend on plausible deniability when using hidden volumes/OS, then you must recreate both the outer and hidden volumes including system encryption and hidden OS, discarding existing volumes created prior to 1.18a version of VeraCrypt.</span></li>
 </p>
 
-<p><strong style="text-align:left">1.26.21</strong> (May 16<sup>th</sup>, 2025):</p>
+<p><strong style="text-align:left">1.26.21</strong> (May 17<sup>th</sup>, 2025):</p>
 <ul>
 <li><strong>All OSes:</strong>
 	<ul>
-	<li>Add support for the Chinese encryption algorithm SM4.</li>
+	<li>Add support for the Chinese encryption algorithm SM4 (System encryption not supported yet).</li>
 	<li>Fix whirlpool implementation for big-endian platforms (GH #1529).</li>
 	<li>Rename "Dismount All" to "Unmount All" in UI. Use ALT+u as new accelerator key instead of ALT+s</li>
 	<li>Add contributed Chinese and Russian CHM documentation.</li>
diff --git a/doc/html/ru/Release Notes.html b/doc/html/ru/Release Notes.html
index d77823fe..6f736035 100644
--- a/doc/html/ru/Release Notes.html	
+++ b/doc/html/ru/Release Notes.html	
@@ -43,11 +43,11 @@
 VeraCrypt старее, чем 1.18a.</span></li>
 </p>
 
-<p><strong style="text-align:left">1.26.21</strong> (16 мая 2025 года):</p>
+<p><strong style="text-align:left">1.26.21</strong> (17 мая 2025 года):</p>
 <ul>
 <li><strong>Все ОС:</strong>
     <ul>
-        <li>Добавлена поддержка китайского алгоритма шифрования SM4.</li>
+        <li>Добавлена поддержка китайского алгоритма шифрования SM4 (системное шифрование пока не поддерживается).</li>
         <li>Исправлена реализация хэш-функции Whirlpool для платформ с прямым порядком байтов (big-endian) (GH #1529).</li>
         <li>В пользовательском интерфейсе "Dismount All" переименовано в "Unmount All". Новая комбинация клавиш: ALT+U вместо ALT+S.</li>
         <li>Добавлена документация в формате CHM на китайском и русском языках (предоставлена сообществом).</li>
diff --git a/doc/html/zh-cn/Release Notes.html b/doc/html/zh-cn/Release Notes.html
index dcd850cd..f7d82b3e 100644
--- a/doc/html/zh-cn/Release Notes.html	
+++ b/doc/html/zh-cn/Release Notes.html	
@@ -40,11 +40,11 @@
 <span style="color:#ff0000;">为避免暴露您的卷是否包含隐藏卷，或者如果您在使用隐藏卷/操作系统时依赖似是而非的否认能力，那么您必须重新创建外部和隐藏卷，包括系统加密和隐藏操作系统，并丢弃VeraCrypt 1.18a版本之前创建的现有卷。</span></li>
 </p>
 
-<p><strong style="text-align:left">1.26.21</strong> (2025年5月16日):</p>
+<p><strong style="text-align:left">1.26.21</strong> (2025年5月17日):</p>
 <ul>
 <li><strong>所有操作系统:</strong>
     <ul>
-    <li>新增对中国加密算法SM4（国密算法）的支持。</li>
+    <li>新增对中国加密算法SM4（国密算法）的支持（暂不支持系统加密）。</li>
     <li>修复Whirlpool算法在大端平台上的实现问题（GH #1529）。</li>
     <li>将用户界面中的“Dismount All”重命名为“Unmount All”，并将快捷键由ALT+s更改为ALT+u。</li>
     <li>新增用户贡献的中文和俄文CHM格式帮助文档。</li>
diff --git a/src/Common/Tcdefs.h b/src/Common/Tcdefs.h
index 6f9a02d0..94e0663f 100644
--- a/src/Common/Tcdefs.h
+++ b/src/Common/Tcdefs.h
@@ -73,7 +73,7 @@ extern unsigned short _rotl16(unsigned short value, unsigned char shift);
 #define VERSION_NUM						0x0126
 
 // Release date
-#define TC_STR_RELEASE_DATE			L"May 16, 2025"
+#define TC_STR_RELEASE_DATE			L"May 17, 2025"
 #define TC_RELEASE_DATE_YEAR			2025
 #define TC_RELEASE_DATE_MONTH			 5
 
diff --git a/src/Driver/Driver.rc b/src/Driver/Driver.rc
index 8b1c4453..1ed2efcb 100644
--- a/src/Driver/Driver.rc
+++ b/src/Driver/Driver.rc
@@ -27,8 +27,8 @@ LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 1,26,21,0
- PRODUCTVERSION 1,26,21,0
+ FILEVERSION 1,26,21,1
+ PRODUCTVERSION 1,26,21,1
  FILEFLAGSMASK 0x17L
 #ifdef _DEBUG
  FILEFLAGS 0x1L
diff --git a/src/Driver/Driver.vcxproj b/src/Driver/Driver.vcxproj
index f99b4aa6..4a2d3128 100644
--- a/src/Driver/Driver.vcxproj
+++ b/src/Driver/Driver.vcxproj
@@ -110,8 +110,8 @@
     <Inf>
       <ProviderName>
       </ProviderName>
-      <TimeStamp>1.26.21.0</TimeStamp>
-      <DateStamp>05/11/2025</DateStamp>
+      <TimeStamp>1.26.21.1</TimeStamp>
+      <DateStamp>05/16/2025</DateStamp>
     </Inf>
     <Link>
       <AdditionalDependencies>fltmgr.lib;%(AdditionalDependencies);$(KernelBufferOverflowLib);$(DDK_LIB_PATH)ntoskrnl.lib;$(DDK_LIB_PATH)hal.lib;$(DDK_LIB_PATH)wmilib.lib;$(KMDF_LIB_PATH)$(KMDF_VER_PATH)\WdfLdr.lib;$(KMDF_LIB_PATH)$(KMDF_VER_PATH)\WdfDriverEntry.lib</AdditionalDependencies>
@@ -137,8 +137,8 @@ copy $(OutDir)veracrypt.inf "$(SolutionDir)Debug\Setup Files\veracrypt.inf"</Com
     <Inf>
       <ProviderName>
       </ProviderName>
-      <TimeStamp>1.26.21.0</TimeStamp>
-      <DateStamp>05/11/2025</DateStamp>
+      <TimeStamp>1.26.21.1</TimeStamp>
+      <DateStamp>05/16/2025</DateStamp>
     </Inf>
     <Link>
       <AdditionalDependencies>fltmgr.lib;%(AdditionalDependencies);$(KernelBufferOverflowLib);$(DDK_LIB_PATH)ntoskrnl.lib;$(DDK_LIB_PATH)hal.lib;$(DDK_LIB_PATH)wmilib.lib;$(KMDF_LIB_PATH)$(KMDF_VER_PATH)\WdfLdr.lib;$(KMDF_LIB_PATH)$(KMDF_VER_PATH)\WdfDriverEntry.lib</AdditionalDependencies>
@@ -164,8 +164,8 @@ copy $(OutDir)veracrypt.inf "$(SolutionDir)Release\Setup Files\veracrypt.inf"</C
     <Inf>
       <ProviderName>
       </ProviderName>
-      <TimeStamp>1.26.21.0</TimeStamp>
-      <DateStamp>05/11/2025</DateStamp>
+      <TimeStamp>1.26.21.1</TimeStamp>
+      <DateStamp>05/16/2025</DateStamp>
     </Inf>
     <Link>
       <AdditionalDependencies>fltmgr.lib;%(AdditionalDependencies);$(KernelBufferOverflowLib);$(DDK_LIB_PATH)ntoskrnl.lib;$(DDK_LIB_PATH)hal.lib;$(DDK_LIB_PATH)wmilib.lib;$(KMDF_LIB_PATH)$(KMDF_VER_PATH)\WdfLdr.lib;$(KMDF_LIB_PATH)$(KMDF_VER_PATH)\WdfDriverEntry.lib</AdditionalDependencies>
@@ -191,8 +191,8 @@ copy $(OutDir)veracrypt.inf "$(SolutionDir)Release\Setup Files\veracrypt.inf"</C
     <Inf>
       <ProviderName>
       </ProviderName>
-      <TimeStamp>1.26.21.0</TimeStamp>
-      <DateStamp>05/11/2025</DateStamp>
+      <TimeStamp>1.26.21.1</TimeStamp>
+      <DateStamp>05/16/2025</DateStamp>
     </Inf>
     <Link>
       <AdditionalDependencies>fltmgr.lib;%(AdditionalDependencies);$(KernelBufferOverflowLib);$(DDK_LIB_PATH)ntoskrnl.lib;$(DDK_LIB_PATH)hal.lib;$(DDK_LIB_PATH)wmilib.lib;$(KMDF_LIB_PATH)$(KMDF_VER_PATH)\WdfLdr.lib;$(KMDF_LIB_PATH)$(KMDF_VER_PATH)\WdfDriverEntry.lib</AdditionalDependencies>