--- compactheader/www/installation.html	2011/09/23 21:52:57	1.105
+++ compactheader/www/installation.html	2018/11/12 23:50:17	1.145
@@ -15,10 +15,10 @@ Download the xpi file from one of the li
 <p>For Thunderbird versions starting with 3.1 use version 1.2.4 or newer up to version 1.4.0:<br>
 <a href="http://downloads.mozdev.org/compactheader/CompactHeader-1.4.0.xpi">Version 1.4.0 of CompactHeader</a></p>
 
-<p>For Thunderbird versions starting with 5.0, use version 1.2.5beta1 or newer:<br>
-<!-- update the version here--><a href="http://downloads.mozdev.org/compactheader/CompactHeader-1.4.5beta2.xpi">Version 1.4.5beta2 of CompactHeader</a></p>
+<p>For Thunderbird versions starting with 5.0, use version 1.4.0 or newer:<br>
+<a href="http://downloads.mozdev.org/compactheader/CompactHeader-1.4.6.xpi">Version 1.4.6 of CompactHeader</a></p>
 
-<p>There is also an experimental version with sidebar support:<br>
-<a href="http://downloads.mozdev.org/compactheader/CompactHeader-1.3.0beta6.xpi">Version 1.3.0beta6 of CompactHeader</a></p>
+<p>For Thunderbird versions starting with 52.0, use version 2.1.0 or newer:<br>
+<!-- update the version here--><a href="http://downloads.mozdev.org/compactheader/CompactHeader-2.2.0beta3.xpi">Version 2.2.0beta3 of CompactHeader</a></p>
 
 Or go to <a href="https://addons.mozilla.org/thunderbird/addon/13564/">addons.mozilla.org</a></p>
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