diff --git a/config/lib.json b/config/lib.json
index 576f1087..78443d0d 100644
--- a/config/lib.json
+++ b/config/lib.json
@@ -86,6 +86,8 @@
             "libssh2",
             "brotli",
             "nghttp2",
+            "nghttp3",
+            "ngtcp2",
             "zstd",
             "libcares"
         ],
@@ -615,7 +617,44 @@
             "openssl"
         ],
         "lib-suggests": [
-            "libxml2"
+            "libxml2",
+            "nghttp3",
+            "ngtcp2"
+        ]
+    },
+    "nghttp3": {
+        "source": "nghttp3",
+        "static-libs-unix": [
+            "libnghttp3.a"
+        ],
+        "static-libs-windows": [
+            "nghttp3.lib"
+        ],
+        "headers": [
+            "nghttp3"
+        ],
+        "lib-depends": [
+            "openssl"
+        ],
+        "lib-suggests": [
+            "ngtcp2"
+        ]
+    },
+    "ngtcp2": {
+        "source": "ngtcp2",
+        "static-libs-unix": [
+            "libngtcp2.a",
+            "libngtcp2_crypto_ossl.a"
+        ],
+        "static-libs-windows": [
+            "ngtcp2.lib",
+            "ngtcp2_crypto_ossl.lib"
+        ],
+        "headers": [
+            "ngtcp2"
+        ],
+        "lib-depends": [
+            "openssl"
         ]
     },
     "onig": {
diff --git a/config/source.json b/config/source.json
index 3cb97433..81c21cfd 100644
--- a/config/source.json
+++ b/config/source.json
@@ -714,6 +714,26 @@
             "path": "COPYING"
         }
     },
+    "nghttp3": {
+        "type": "ghrel",
+        "repo": "ngtcp2/nghttp3",
+        "match": "nghttp3.+\\.tar\\.xz",
+        "prefer-stable": true,
+        "license": {
+            "type": "file",
+            "path": "COPYING"
+        }
+    },
+    "ngtcp2": {
+        "type": "ghrel",
+        "repo": "ngtcp2/ngtcp2",
+        "match": "ngtcp2.+\\.tar\\.xz",
+        "prefer-stable": true,
+        "license": {
+            "type": "file",
+            "path": "COPYING"
+        }
+    },
     "onig": {
         "type": "ghrel",
         "repo": "kkos/oniguruma",
diff --git a/docs/en/guide/extension-notes.md b/docs/en/guide/extension-notes.md
index 83c0b787..dc0f1d7a 100644
--- a/docs/en/guide/extension-notes.md
+++ b/docs/en/guide/extension-notes.md
@@ -6,6 +6,8 @@ which will be listed one by one here.
 
 ## curl
 
+HTTP3 support is not enabled by default, compile with `--with-libs="nghttp2,nghttp3,ngtcp2"` to enable HTTP3 support for PHP >= 8.4.
+
 When using curl to request HTTPS, there may be an `error:80000002:system library::No such file or directory` error.
 For details on the solution, see [FAQ - Unable to use ssl](../faq/#unable-to-use-ssl).
 
@@ -156,4 +158,4 @@ Parallel is only supported on PHP 8.0 ZTS and above.
 
 1. This is not technically an extension, but a library.
 2. Building with `--with-libs="mimalloc"` on Linux or macOS will override the default allocator.
-3. This is experimental for now, but is recommended in threaded environments.
\ No newline at end of file
+3. This is experimental for now, but is recommended in threaded environments.
diff --git a/docs/zh/guide/extension-notes.md b/docs/zh/guide/extension-notes.md
index 762d2df9..c7b3a8d1 100644
--- a/docs/zh/guide/extension-notes.md
+++ b/docs/zh/guide/extension-notes.md
@@ -4,6 +4,8 @@
 
 ## curl
 
+HTTP3 支持默认未启用，需在编译时添加 `--with-libs="nghttp2,nghttp3,ngtcp2"` 以启用 PHP 8.4 及以上版本的 HTTP3 支持。
+
 使用 curl 请求 HTTPS 时，可能存在 `error:80000002:system library::No such file or directory` 错误，
 解决办法详见 [FAQ - 无法使用 ssl](../faq/#无法使用-ssl)。
 
diff --git a/src/SPC/builder/linux/LinuxBuilder.php b/src/SPC/builder/linux/LinuxBuilder.php
index e38714f1..66604ecb 100644
--- a/src/SPC/builder/linux/LinuxBuilder.php
+++ b/src/SPC/builder/linux/LinuxBuilder.php
@@ -80,6 +80,9 @@ class LinuxBuilder extends UnixBuilderBase
         $ret = '';
         foreach ($libSpecs as $libName => $arr) {
             $lib = $this->getLib($libName);
+            if ($lib === null && str_starts_with($libName, 'lib')) {
+                $lib = $this->getExt(substr($libName, 3));
+            }
 
             $arr = $arr ?? [];
 
diff --git a/src/SPC/builder/linux/library/nghttp3.php b/src/SPC/builder/linux/library/nghttp3.php
new file mode 100644
index 00000000..b26ef647
--- /dev/null
+++ b/src/SPC/builder/linux/library/nghttp3.php
@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\linux\library;
+
+class nghttp3 extends LinuxLibraryBase
+{
+    use \SPC\builder\unix\library\nghttp3;
+
+    public const NAME = 'nghttp3';
+}
diff --git a/src/SPC/builder/linux/library/ngtcp2.php b/src/SPC/builder/linux/library/ngtcp2.php
new file mode 100644
index 00000000..1e520b0b
--- /dev/null
+++ b/src/SPC/builder/linux/library/ngtcp2.php
@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\linux\library;
+
+class ngtcp2 extends LinuxLibraryBase
+{
+    use \SPC\builder\unix\library\ngtcp2;
+
+    public const NAME = 'ngtcp2';
+}
diff --git a/src/SPC/builder/macos/MacOSBuilder.php b/src/SPC/builder/macos/MacOSBuilder.php
index 9f9ad684..36b8583f 100644
--- a/src/SPC/builder/macos/MacOSBuilder.php
+++ b/src/SPC/builder/macos/MacOSBuilder.php
@@ -55,6 +55,9 @@ class MacOSBuilder extends UnixBuilderBase
         $ret = '';
         foreach ($lib_specs as $libName => $arr) {
             $lib = $this->getLib($libName);
+            if ($lib === null && str_starts_with($libName, 'lib')) {
+                $lib = $this->getExt(substr($libName, 3));
+            }
 
             $arr = $arr ?? [];
 
diff --git a/src/SPC/builder/macos/library/nghttp3.php b/src/SPC/builder/macos/library/nghttp3.php
new file mode 100644
index 00000000..9feebb01
--- /dev/null
+++ b/src/SPC/builder/macos/library/nghttp3.php
@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\macos\library;
+
+class nghttp3 extends MacOSLibraryBase
+{
+    use \SPC\builder\unix\library\nghttp3;
+
+    public const NAME = 'nghttp3';
+}
diff --git a/src/SPC/builder/macos/library/ngtcp2.php b/src/SPC/builder/macos/library/ngtcp2.php
new file mode 100644
index 00000000..290e36ee
--- /dev/null
+++ b/src/SPC/builder/macos/library/ngtcp2.php
@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\macos\library;
+
+class ngtcp2 extends MacOSLibraryBase
+{
+    use \SPC\builder\unix\library\ngtcp2;
+
+    public const NAME = 'ngtcp2';
+}
diff --git a/src/SPC/builder/unix/library/curl.php b/src/SPC/builder/unix/library/curl.php
index 46f36603..23b1c80a 100644
--- a/src/SPC/builder/unix/library/curl.php
+++ b/src/SPC/builder/unix/library/curl.php
@@ -47,6 +47,24 @@ trait curl
         } else {
             $extra .= '-DUSE_NGHTTP2=OFF ';
         }
+        // lib:nghttp3
+        if ($nghttp3 = $this->builder->getLib('nghttp3')) {
+            $extra .= '-DUSE_NGHTTP3=ON ' .
+                /* @phpstan-ignore-next-line */
+                '-DNGHTTP3_LIBRARY="' . $nghttp3->getStaticLibFiles(style: 'cmake') . '" ' .
+                '-DNGHTTP3_INCLUDE_DIR="' . BUILD_INCLUDE_PATH . '" ';
+        } else {
+            $extra .= '-DUSE_NGHTTP3=OFF ';
+        }
+        // lib:ngtcp2
+        if ($ngtcp2 = $this->builder->getLib('ngtcp2')) {
+            $extra .= '-DUSE_NGTCP2=ON ' .
+                /* @phpstan-ignore-next-line */
+                '-DNGTCP2_LIBRARY="' . $ngtcp2->getStaticLibFiles(style: 'cmake') . '" ' .
+                '-DNGTCP2_INCLUDE_DIR="' . BUILD_INCLUDE_PATH . '" ';
+        } else {
+            $extra .= '-DUSE_NGTCP2=OFF ';
+        }
         // lib:ldap
         $extra .= $this->builder->getLib('ldap') ? '-DCURL_DISABLE_LDAP=OFF ' : '-DCURL_DISABLE_LDAP=ON ';
         // lib:zstd
diff --git a/src/SPC/builder/unix/library/nghttp2.php b/src/SPC/builder/unix/library/nghttp2.php
index 8f764c2a..dbbb6415 100644
--- a/src/SPC/builder/unix/library/nghttp2.php
+++ b/src/SPC/builder/unix/library/nghttp2.php
@@ -30,7 +30,6 @@ trait nghttp2
             'jansson' => null,
             'jemalloc' => null,
             'systemd' => null,
-            'cunit' => null,
         ]);
 
         [,,$destdir] = SEPARATED_PATH;
@@ -41,8 +40,8 @@ trait nghttp2
                 './configure ' .
                 '--enable-static ' .
                 '--disable-shared ' .
+                '--with-pic ' .
                 '--enable-lib-only ' .
-                '--with-boost=no ' .
                 $args . ' ' .
                 '--prefix='
             )
diff --git a/src/SPC/builder/unix/library/nghttp3.php b/src/SPC/builder/unix/library/nghttp3.php
new file mode 100644
index 00000000..6f677869
--- /dev/null
+++ b/src/SPC/builder/unix/library/nghttp3.php
@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\unix\library;
+
+use SPC\exception\FileSystemException;
+use SPC\exception\RuntimeException;
+use SPC\exception\WrongUsageException;
+
+trait nghttp3
+{
+    /**
+     * @throws FileSystemException
+     * @throws RuntimeException
+     * @throws WrongUsageException
+     */
+    protected function build(): void
+    {
+        $args = $this->builder->makeAutoconfArgs(static::NAME, [
+            'zlib' => null,
+            'openssl' => null,
+        ]);
+
+        shell()->cd($this->source_dir)
+            ->setEnv([
+                'CFLAGS' => $this->getLibExtraCFlags(),
+                'LDFLAGS' => $this->getLibExtraLdFlags(),
+                'LIBS' => $this->getLibExtraLibs(),
+            ])
+            ->execWithEnv(
+                './configure ' .
+                '--enable-static ' .
+                '--disable-shared ' .
+                '--with-pic ' .
+                '--enable-lib-only ' .
+                $args . ' ' .
+                '--prefix='
+            )
+            ->execWithEnv('make clean')
+            ->execWithEnv("make -j{$this->builder->concurrency}")
+            ->execWithEnv('make install DESTDIR=' . BUILD_ROOT_PATH);
+        $this->patchPkgconfPrefix(['libnghttp3.pc']);
+    }
+}
diff --git a/src/SPC/builder/unix/library/ngtcp2.php b/src/SPC/builder/unix/library/ngtcp2.php
new file mode 100644
index 00000000..20620499
--- /dev/null
+++ b/src/SPC/builder/unix/library/ngtcp2.php
@@ -0,0 +1,49 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\unix\library;
+
+use SPC\exception\FileSystemException;
+use SPC\exception\RuntimeException;
+use SPC\exception\WrongUsageException;
+
+trait ngtcp2
+{
+    /**
+     * @throws FileSystemException
+     * @throws RuntimeException
+     * @throws WrongUsageException
+     */
+    protected function build(): void
+    {
+        $args = $this->builder->makeAutoconfArgs(static::NAME, [
+            'zlib' => null,
+            'openssl' => null,
+            'libxml2' => null,
+            'libev' => null,
+            'jemalloc' => null,
+        ]);
+
+        shell()->cd($this->source_dir)
+            ->setEnv([
+                'CFLAGS' => $this->getLibExtraCFlags(),
+                'LDFLAGS' => $this->getLibExtraLdFlags(),
+                'LIBS' => $this->getLibExtraLibs(),
+            ])
+            ->execWithEnv(
+                './configure ' .
+                '--enable-static ' .
+                '--disable-shared ' .
+                '--with-pic ' .
+                '--enable-lib-only ' .
+                $args . ' ' .
+                '--prefix='
+            )
+            ->execWithEnv('make clean')
+            ->execWithEnv("make -j{$this->builder->concurrency}")
+            ->execWithEnv('make install DESTDIR=' . BUILD_ROOT_PATH);
+        $this->patchPkgconfPrefix(['libngtcp2.pc']);
+        $this->patchPkgconfPrefix(['libngtcp2_crypto_ossl.pc']);
+    }
+}
diff --git a/src/SPC/builder/windows/library/nghttp3.php b/src/SPC/builder/windows/library/nghttp3.php
new file mode 100644
index 00000000..1586a4d8
--- /dev/null
+++ b/src/SPC/builder/windows/library/nghttp3.php
@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\windows\library;
+
+use SPC\store\FileSystem;
+
+class nghttp3 extends WindowsLibraryBase
+{
+    public const NAME = 'nghttp3';
+
+    protected function build(): void
+    {
+        // reset cmake
+        FileSystem::resetDir($this->source_dir . '\build');
+
+        // start build
+        cmd()->cd($this->source_dir)
+            ->execWithWrapper(
+                $this->builder->makeSimpleWrapper('cmake'),
+                '-B build ' .
+                '-A x64 ' .
+                "-DCMAKE_TOOLCHAIN_FILE={$this->builder->cmake_toolchain_file} " .
+                '-DCMAKE_BUILD_TYPE=Release ' .
+                '-DENABLE_SHARED_LIB=OFF ' .
+                '-DENABLE_STATIC_LIB=ON ' .
+                '-DBUILD_STATIC_LIBS=ON ' .
+                '-DBUILD_SHARED_LIBS=OFF ' .
+                '-DENABLE_STATIC_CRT=ON ' .
+                '-DENABLE_LIB_ONLY=ON ' .
+                '-DCMAKE_INSTALL_PREFIX=' . BUILD_ROOT_PATH . ' '
+            )
+            ->execWithWrapper(
+                $this->builder->makeSimpleWrapper('cmake'),
+                "--build build --config Release --target install -j{$this->builder->concurrency}"
+            );
+    }
+}
diff --git a/src/SPC/builder/windows/library/ngtcp2.php b/src/SPC/builder/windows/library/ngtcp2.php
new file mode 100644
index 00000000..d0f557b7
--- /dev/null
+++ b/src/SPC/builder/windows/library/ngtcp2.php
@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\windows\library;
+
+use SPC\store\FileSystem;
+
+class ngtcp2 extends WindowsLibraryBase
+{
+    public const NAME = 'ngtcp2';
+
+    protected function build(): void
+    {
+        // reset cmake
+        FileSystem::resetDir($this->source_dir . '\build');
+
+        // start build
+        cmd()->cd($this->source_dir)
+            ->execWithWrapper(
+                $this->builder->makeSimpleWrapper('cmake'),
+                '-B build ' .
+                '-A x64 ' .
+                "-DCMAKE_TOOLCHAIN_FILE={$this->builder->cmake_toolchain_file} " .
+                '-DCMAKE_BUILD_TYPE=Release ' .
+                '-DENABLE_SHARED_LIB=OFF ' .
+                '-DENABLE_STATIC_LIB=ON ' .
+                '-DBUILD_STATIC_LIBS=ON ' .
+                '-DBUILD_SHARED_LIBS=OFF ' .
+                '-DENABLE_STATIC_CRT=ON ' .
+                '-DENABLE_LIB_ONLY=ON ' .
+                '-DCMAKE_INSTALL_PREFIX=' . BUILD_ROOT_PATH . ' '
+            )
+            ->execWithWrapper(
+                $this->builder->makeSimpleWrapper('cmake'),
+                "--build build --config Release --target install -j{$this->builder->concurrency}"
+            );
+    }
+}