diff --git a/doc/src/sgml/external-projects.sgml b/doc/src/sgml/external-projects.sgml
index cfd28d140ca..c4bb2f88c9c 100644
--- a/doc/src/sgml/external-projects.sgml
+++ b/doc/src/sgml/external-projects.sgml
@@ -178,7 +178,7 @@
      <row>
       <entry>PL/PHP</entry>
       <entry>PHP</entry>
-      <entry><ulink url="http://www.commandprompt.com/community/plphp/">http://www.commandprompt.com/community/plphp/</ulink></entry>
+      <entry><ulink url="https://public.commandprompt.com/projects/plphp">https://public.commandprompt.com/projects/plphp</ulink></entry>
      </row>
 
      <row>