diff --git a/config/pkg/lib/pthreads4w.yml b/config/pkg/lib/pthreads4w.yml
new file mode 100644
index 00000000..06a6245f
--- /dev/null
+++ b/config/pkg/lib/pthreads4w.yml
@@ -0,0 +1,12 @@
+pthreads4w:
+  type: library
+  artifact:
+    source:
+      type: git
+      rev: master
+      url: 'https://git.code.sf.net/p/pthreads4w/code'
+    metadata:
+      license-files: [LICENSE]
+      license: Apache-2.0
+  static-libs@windows:
+    - libpthreadVC3.lib
diff --git a/src/Package/Library/pthreads4w.php b/src/Package/Library/pthreads4w.php
new file mode 100644
index 00000000..69f181f0
--- /dev/null
+++ b/src/Package/Library/pthreads4w.php
@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Package\Library;
+
+use StaticPHP\Attribute\Package\BuildFor;
+use StaticPHP\Attribute\Package\Library;
+use StaticPHP\Package\LibraryPackage;
+use StaticPHP\Util\FileSystem;
+
+#[Library('pthreads4w')]
+class pthreads4w
+{
+    #[BuildFor('Windows')]
+    public function buildWin(LibraryPackage $lib): void
+    {
+        cmd()->cd($lib->getSourceDir())
+            ->exec(
+                'nmake /E /nologo /f Makefile ' .
+                'DESTROOT=' . $lib->getBuildRootPath() . ' ' .
+                'XCFLAGS="/MT" ' . // no dll
+                'EHFLAGS="/I. /DHAVE_CONFIG_H /Os /Ob2 /D__PTW32_STATIC_LIB /D__PTW32_BUILD_INLINED" ' .
+                'pthreadVC3.inlined_static_stamp'
+            );
+        FileSystem::createDir($lib->getLibDir());
+        FileSystem::createDir($lib->getIncludeDir());
+        FileSystem::copy("{$lib->getSourceDir()}\\libpthreadVC3.lib", "{$lib->getLibDir()}\\libpthreadVC3.lib");
+        FileSystem::copy("{$lib->getSourceDir()}\\_ptw32.h", "{$lib->getIncludeDir()}\\_ptw32.h");
+        FileSystem::copy("{$lib->getSourceDir()}\\pthread.h", "{$lib->getIncludeDir()}\\pthread.h");
+        FileSystem::copy("{$lib->getSourceDir()}\\sched.h", "{$lib->getIncludeDir()}\\sched.h");
+        FileSystem::copy("{$lib->getSourceDir()}\\semaphore.h", "{$lib->getIncludeDir()}\\semaphore.h");
+    }
+}