diff --git a/docinfo.xml b/docinfo.xml
index 5a71583..a8f87d9 100644
--- a/docinfo.xml
+++ b/docinfo.xml
@@ -2,7 +2,7 @@
 
 <authorgroup>
   <corpauthor>Proxmox Server Solutions Gmbh
-  <ulink url="http://www.proxmox.com/"><citetitle>www.proxmox.com</citetitle></ulink>
+  <ulink url="https://www.proxmox.com/"><citetitle>www.proxmox.com</citetitle></ulink>
   </corpauthor>
 </authorgroup>