diff --git a/pdfio.html b/pdfio.html
index a51a8d9..c761349 100644
--- a/pdfio.html
+++ b/pdfio.html
@@ -1,13 +1,13 @@
 <!DOCTYPE html>
 <html lang="en-US">
 <head>
-<title>pdfio Programming Manual</title>
+<title>pdfio Programming Manual v0.1</title>
 <meta http-equiv="Content-Type" content="text/html;charset=utf-8">
 <meta name="generator" content="codedoc v3.7">
 <meta name="author" content="Michael R Sweet">
 <meta name="language" content="en-US">
 <meta name="copyright" content="Copyright © 2021 by Michael R Sweet">
-<meta name="version" content="1.0">
+<meta name="version" content="0.1">
 <style type="text/css"><!--
 body {
   background: white;
@@ -244,7 +244,7 @@ span.string {
 </head>
 <body>
 <div class="header">
-<h1 class="title">pdfio Programming Manual</h1>
+<h1 class="title">pdfio Programming Manual v0.1</h1>
 <p>Michael R Sweet</p>
 <p>Copyright © 2021 by Michael R Sweet</p>
 </div>
