Update TAG file

diff --git a/doc/users/doxygen.html b/doc/users/doxygen.html
index afe88b58d5ae03c37096e0afaf4881e53a4aadd4..302c6b057226f3db7c80714568e34e323788290c 100644 (file)
--- a/doc/users/doxygen.html
+++ b/doc/users/doxygen.html
@@ -30,6 +30,7 @@
       Doxygen, if the online documentation is available,
       <a href="../doxygen/deal.II/index.html">here</a>. For older revisions,
        links are provided here by revision number:
+       <a href="http://www.dealii.org/9.1.0/doxygen/deal.tag">9.1.0</a>,
        <a href="http://www.dealii.org/9.0.0/doxygen/deal.tag">9.0.0</a>,
        <a href="http://www.dealii.org/8.5.0/doxygen/deal.tag">8.5.0</a>,
        <a href="http://www.dealii.org/8.4.2/doxygen/deal.tag">8.4.2</a>,