diff --git a/Doc.md b/Doc.md
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--- a/Doc.md
+++ b/Doc.md
@@ -42,6 +42,8 @@ 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="<https://tahoe-lafs.org/trac/tahoe-lafs/browser/trunk/relnotes.txt?rev=d9c7dfa4a0085884>">v1.9.1</a></td><td>Janary 12, 2012</td><td>critical security fix</td></tr>
       <tr><td><a href="<https://tahoe-lafs.org/trac/tahoe-lafs/browser/trunk/relnotes.txt?rev=ac49656723a9dbd7>">v1.9.0</a></td><td>October 31, 2011</td><td>new mutable-file format (more efficient for large files), file-blacklisting, drop-upload</td></tr>
       <tr><td><a href="<http://tahoe-lafs.org/trac/tahoe-lafs/browser/1.8.3/relnotes.txt?rev=13d284b087f6f4e3>">v1.8.3</a></td><td>September 13, 2011</td><td>security fix</td></tr>
       <tr><td><a href="<http://tahoe-lafs.org/trac/tahoe-lafs/browser/trunk/relnotes.txt?rev=7a4f76fd90018447>">v1.8.2</a></td><td>January 30, 2011</td><td>Twisted-10.2 compatibility, minor bugfixes</td></tr>