diff --git a/Parsedown.php b/Parsedown.php
index 646af86..4737eee 100644
--- a/Parsedown.php
+++ b/Parsedown.php
@@ -515,6 +515,16 @@ class Parsedown
                 ),
             );
 
+            if($name === 'ol') 
+            {
+                $listStart = stristr($matches[0], '.', true);
+                
+                if($listStart !== '1')
+                {
+                    $Block['element']['attributes'] = array('start' => $listStart);
+                }
+            }
+
             $Block['li'] = array(
                 'name' => 'li',
                 'handler' => 'li',
diff --git a/test/data/ordered_list.html b/test/data/ordered_list.html
index b6c5216..c4a69db 100644
--- a/test/data/ordered_list.html
+++ b/test/data/ordered_list.html
@@ -8,6 +8,6 @@
 <li>two</li>
 </ol>
 <p>large numbers:</p>
-<ol>
+<ol start="123">
 <li>one</li>
 </ol>
\ No newline at end of file