diff --git a/doc/lib.m4 b/doc/lib.m4
index d5f88dd83..7511f9c26 100644
--- a/doc/lib.m4
+++ b/doc/lib.m4
@@ -9,7 +9,7 @@ m4_dnl
 m4_define({{_author_}}, {{}})m4_dnl
 m4_define({{_monthyear_}}, {{May 2016}})m4_dnl
 m4_define({{_currentrelease_}}, {{0.27}})m4_dnl
-m4_define({{_version_}}, {{0.28}})m4_dnl
+m4_define({{_version_}}, {{0.28dev}})m4_dnl
 m4_dnl
 m4_dnl Links to dev and recent release versions of a manual.
 m4_dnl $1 is the manual's web slug: hledger, hledger-ui, journal, csv etc.
diff --git a/site/js/site.js b/site/js/site.js
index 089572df0..6526122ce 100644
--- a/site/js/site.js
+++ b/site/js/site.js
@@ -6,7 +6,7 @@ function highlightDocVersion() {
   $('.versions').each( function() {
     var parts = window.location.pathname.split('/');
     var dir = parts.length > 1 ? parts[parts.length-2] : '';
-    var ver = $.isNumeric(dir) ? dir : '0.28';
+    var ver = $.isNumeric(dir) ? dir : '0.28dev';
     $(this).find('a').each( function() {
       if ($(this).html() == ver)
         $(this)