diff --git a/sites.php b/sites.php
index c0b30ab39f..bda9964901 100644
--- a/sites.php
+++ b/sites.php
@@ -164,7 +164,7 @@ interface to it. There you can browse the history (and latest versions) of the
 
 <p class="content-box">
  The PHP project used to be organized under the SVN revision control system, but
- migrated to <a href="http://github.com/php/">Git</a> (see above) in March 2012.
+ migrated to <a href="https://github.com/php/">Git</a> (see above) in March 2012.
  The old SVN repository is archived here for posterity, however it's still used for
  i.e. documentation files.
 </p>