diff --git a/ext/pathname/extconf.rb b/ext/pathname/extconf.rb
index 6720903..037f100 100644
--- a/ext/pathname/extconf.rb
+++ b/ext/pathname/extconf.rb
@@ -1,2 +1,3 @@
 require 'mkmf'
+have_struct_member("struct stat", "st_birthtimespec", "sys/stat.h")
 create_makefile('pathname')
diff --git a/ext/pathname/pathname.c b/ext/pathname/pathname.c
index 3db97fc..2729633 100644
--- a/ext/pathname/pathname.c
+++ b/ext/pathname/pathname.c
@@ -442,6 +442,25 @@ path_atime(VALUE self)
 
 /*
  * call-seq:
+ *   pathname.birthtime	-> time
+ *
+ * Returns the birth time for the file.
+ * If the platform doesn't have birthtime, returns <i>ctime</i>.
+ *
+ * See File.birthtime.
+ */
+#if defined(HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC)
+static VALUE
+path_birthtime(VALUE self)
+{
+    return rb_funcall(rb_cFile, rb_intern("birthtime"), 1, get_strpath(self));
+}
+#else
+# define path_birthtime rb_f_notimplement
+#endif
+
+/*
+ * call-seq:
  *   pathname.ctime	-> time
  *
  * Returns the last change time, using directory information, not the file itself.
@@ -1288,6 +1307,7 @@ path_f_pathname(VALUE self, VALUE str)
  *
  * These methods are a facade for File:
  * - #atime
+ * - #birthtime
  * - #ctime
  * - #mtime
  * - #chmod(mode)
@@ -1380,6 +1400,7 @@ Init_pathname()
     rb_define_method(rb_cPathname, "binwrite", path_binwrite, -1);
     rb_define_method(rb_cPathname, "sysopen", path_sysopen, -1);
     rb_define_method(rb_cPathname, "atime", path_atime, 0);
+    rb_define_method(rb_cPathname, "birthtime", path_birthtime, 0);
     rb_define_method(rb_cPathname, "ctime", path_ctime, 0);
     rb_define_method(rb_cPathname, "mtime", path_mtime, 0);
     rb_define_method(rb_cPathname, "chmod", path_chmod, 1);
diff --git a/pathname_birthtime.patch b/pathname_birthtime.patch
new file mode 100644
index 0000000..cff3325
--- /dev/null
+++ b/pathname_birthtime.patch
@@ -0,0 +1,62 @@
+diff --git a/ext/pathname/pathname.c b/ext/pathname/pathname.c
+index 3db97fc..cfdaac9 100644
+--- a/ext/pathname/pathname.c
++++ b/ext/pathname/pathname.c
+@@ -442,6 +442,25 @@ path_atime(VALUE self)
+ 
+ /*
+  * call-seq:
++ *   pathname.birthtime	-> time
++ *
++ * Returns the birth time for the file.
++ * If the platform doesn't have birthtime, returns <i>ctime</i>.
++ *
++ * See File.birthtime.
++ */
++#if defined(HAVE_STAT_BIRTHTIME)
++static VALUE
++path_birthtime(VALUE self)
++{
++    return rb_funcall(rb_cFile, rb_intern("birthtime"), 1, get_strpath(self));
++}
++#else
++# define path_birthtime rb_f_notimplement
++#endif
++
++/*
++ * call-seq:
+  *   pathname.ctime	-> time
+  *
+  * Returns the last change time, using directory information, not the file itself.
+@@ -1288,6 +1307,7 @@ path_f_pathname(VALUE self, VALUE str)
+  *
+  * These methods are a facade for File:
+  * - #atime
++ * - #birthtime
+  * - #ctime
+  * - #mtime
+  * - #chmod(mode)
+@@ -1380,6 +1400,7 @@ Init_pathname()
+     rb_define_method(rb_cPathname, "binwrite", path_binwrite, -1);
+     rb_define_method(rb_cPathname, "sysopen", path_sysopen, -1);
+     rb_define_method(rb_cPathname, "atime", path_atime, 0);
++    rb_define_method(rb_cPathname, "birthtime", path_birthtime, 0);
+     rb_define_method(rb_cPathname, "ctime", path_ctime, 0);
+     rb_define_method(rb_cPathname, "mtime", path_mtime, 0);
+     rb_define_method(rb_cPathname, "chmod", path_chmod, 1);
+diff --git a/test/pathname/test_pathname.rb b/test/pathname/test_pathname.rb
+index 110b782..413cb4c 100644
+--- a/test/pathname/test_pathname.rb
++++ b/test/pathname/test_pathname.rb
+@@ -771,6 +771,11 @@ class TestPathname < Test::Unit::TestCase
+     assert_kind_of(Time, Pathname(__FILE__).atime)
+   end
+ 
++  def test_birthtime
++    assert_kind_of(Time, Pathname(__FILE__).birthtime)
++  rescue NotImplementedError
++  end
++
+   def test_ctime
+     assert_kind_of(Time, Pathname(__FILE__).ctime)
+   end
diff --git a/test/pathname/test_pathname.rb b/test/pathname/test_pathname.rb
index 110b782..98d321f 100644
--- a/test/pathname/test_pathname.rb
+++ b/test/pathname/test_pathname.rb
@@ -771,6 +771,14 @@ class TestPathname < Test::Unit::TestCase
     assert_kind_of(Time, Pathname(__FILE__).atime)
   end
 
+  def test_birthtime
+    assert_kind_of(Time, Pathname(__FILE__).birthtime)
+  rescue NotImplementedError
+    assert_raise(NotImplementedError) do
+      File.birthtime(__FILE__)
+    end
+  end
+
   def test_ctime
     assert_kind_of(Time, Pathname(__FILE__).ctime)
   end