diff --git a/config/ext.json b/config/ext.json
index 566974b9..4352f2e2 100644
--- a/config/ext.json
+++ b/config/ext.json
@@ -43,6 +43,14 @@
     "calendar": {
         "type": "builtin"
     },
+    "com_dotnet": {
+        "support": {
+            "BSD": "no",
+            "Linux": "no",
+            "Darwin": "no"
+        },
+        "type": "builtin"
+    },
     "ctype": {
         "type": "builtin"
     },
diff --git a/src/SPC/builder/extension/com_dotnet.php b/src/SPC/builder/extension/com_dotnet.php
new file mode 100644
index 00000000..7a8f6a4e
--- /dev/null
+++ b/src/SPC/builder/extension/com_dotnet.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\extension;
+
+use SPC\builder\Extension;
+use SPC\util\CustomExt;
+
+#[CustomExt('com_dotnet')]
+class com_dotnet extends Extension
+{
+    public function getWindowsConfigureArg(bool $shared = false): string
+    {
+        return '--enable-com-dotnet=yes';
+    }
+}
diff --git a/src/SPC/command/SwitchPhpVersionCommand.php b/src/SPC/command/SwitchPhpVersionCommand.php
index 30ee0c79..04a31a75 100644
--- a/src/SPC/command/SwitchPhpVersionCommand.php
+++ b/src/SPC/command/SwitchPhpVersionCommand.php
@@ -20,9 +20,9 @@ class SwitchPhpVersionCommand extends BaseCommand
         $this->addArgument(
             'php-major-version',
             InputArgument::REQUIRED,
-            'PHP major version (supported: 7.4, 8.0, 8.1, 8.2, 8.3, 8.4)',
+            'PHP major version (supported: 7.4, 8.0, 8.1, 8.2, 8.3, 8.4, 8.5)',
             null,
-            fn () => ['7.4', '8.0', '8.1', '8.2', '8.3', '8.4']
+            fn () => ['7.4', '8.0', '8.1', '8.2', '8.3', '8.4', '8.5']
         );
         $this->no_motd = true;
 
@@ -32,7 +32,7 @@ class SwitchPhpVersionCommand extends BaseCommand
     public function handle(): int
     {
         $php_ver = $this->input->getArgument('php-major-version');
-        if (!in_array($php_ver, ['7.4', '8.0', '8.1', '8.2', '8.3', '8.4'])) {
+        if (!in_array($php_ver, ['7.4', '8.0', '8.1', '8.2', '8.3', '8.4', '8.5'])) {
             // match x.y.z
             preg_match('/^\d+\.\d+\.\d+$/', $php_ver, $matches);
             if (!$matches) {
diff --git a/src/globals/test-extensions.php b/src/globals/test-extensions.php
index e2186c8e..8b22658c 100644
--- a/src/globals/test-extensions.php
+++ b/src/globals/test-extensions.php
@@ -13,7 +13,7 @@ declare(strict_types=1);
 
 // test php version (8.1 ~ 8.4 available, multiple for matrix)
 $test_php_version = [
-    // '8.1',
+    '8.1',
     '8.2',
     '8.3',
     '8.4',
@@ -23,15 +23,15 @@ $test_php_version = [
 
 // test os (macos-15-intel, macos-15, ubuntu-latest, windows-latest are available)
 $test_os = [
-    'macos-15-intel', // bin/spc for x86_64
-    'macos-15', // bin/spc for arm64
-    'ubuntu-latest', // bin/spc-alpine-docker for x86_64
-    'ubuntu-22.04', // bin/spc-gnu-docker for x86_64
-    'ubuntu-24.04', // bin/spc for x86_64
+    // 'macos-15-intel', // bin/spc for x86_64
+    // 'macos-15', // bin/spc for arm64
+    // 'ubuntu-latest', // bin/spc-alpine-docker for x86_64
+    // 'ubuntu-22.04', // bin/spc-gnu-docker for x86_64
+    // 'ubuntu-24.04', // bin/spc for x86_64
     // 'ubuntu-22.04-arm', // bin/spc-gnu-docker for arm64
     // 'ubuntu-24.04-arm', // bin/spc for arm64
     // 'windows-2022', // .\bin\spc.ps1
-    // 'windows-2025',
+    'windows-2025',
 ];
 
 // whether enable thread safe
@@ -51,7 +51,7 @@ $prefer_pre_built = false;
 // If you want to test your added extensions and libs, add below (comma separated, example `bcmath,openssl`).
 $extensions = match (PHP_OS_FAMILY) {
     'Linux', 'Darwin' => 'mysqli,gmp',
-    'Windows' => 'bcmath',
+    'Windows' => 'com_dotnet',
 };
 
 // If you want to test shared extensions, add them below (comma separated, example `bcmath,openssl`).