diff --git a/Doc.md b/Doc.md
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@@ -43,6 +43,7 @@ Note: these links are to the 'trunk' (latest) versions of the documentation. See
 
     <table border="1px solid black" border-collapse="collapse">
       <tr><th>release notes</th><th>date</th><th>what's new</th></tr>
+      <tr><td><a href="<http://allmydata.org/trac/tahoe/browser/relnotes.txt?rev=80816fd72227563f>">v1.6</a></td><td>February 1, 2010</td><td>performance improvements, usability improvements, deep-immutable directories</td></tr>
       <tr><td><a href="<http://allmydata.org/trac/tahoe/browser/relnotes.txt?rev=263713ee659cbd32>">v1.5</a></td><td>August 1, 2009</td><td>WUI style, forward-compatibility, no size-limit on directories, more efficient directories, safer mv</td></tr>
       <tr><td><a href="<http://allmydata.org/trac/tahoe/browser/relnotes.txt?rev=8c687c78dac5b56a>">v1.4.1</a></td><td>April 13, 2009</td><td>garbage collection, improved diagnostics, performance improvement when downloading many GB files</td></tr>
       <tr><td><a href="<http://allmydata.org/trac/tahoe/browser/relnotes.txt?rev=967d1b414d860b65>">v1.3</a></td><td>February 13, 2009</td><td>repairer, backup command, large files, (S)FTP server, more</td></tr>