diff --git a/2023-Conference/conf2023.html b/2023-Conference/conf2023.html
index 7d795308..7acb94d6 100644
--- a/2023-Conference/conf2023.html
+++ b/2023-Conference/conf2023.html
@@ -234,7 +234,7 @@ <h3>Conference live</h3>
 <ul>
 <li> Videos on <a href="https://www.youtube.com/playlist?list=PLJ5nSnWzQXi8-w5MAt_Rf-OjNDtBME7nK">Youtube</a></li>
 <li> SlideShare: <a href="http://www.slideshare.net/esug/presentations">http://www.slideshare.net/esug/presentations</a></li>
-<li> PDF Archive: <a href="http://www.esug.org/data/ESUG2023/">http://www.esug.org/data/ESUG2023/</a></li>
+<li> PDF Archive: <a href="http://old.esug.org/data/ESUG2023/">http://old.esug.org/data/ESUG2023/</a></li>
 </ul>
 
 
diff --git a/2023-Conference/conf2023.pillar b/2023-Conference/conf2023.pillar
index a7ceecd0..39a238bb 100644
--- a/2023-Conference/conf2023.pillar
+++ b/2023-Conference/conf2023.pillar
@@ -88,7 +88,7 @@ See *Call for Student Volunteers>callForStudents2023.pillar*
 
 - Videos on *Youtube>https://www.youtube.com/playlist?list=PLJ5nSnWzQXi8-w5MAt_Rf-OjNDtBME7nK*
 - SlideShare: *http://www.slideshare.net/esug/presentations*
-- PDF Archive: *http://www.esug.org/data/ESUG2023/*
+- PDF Archive: *http://old.esug.org/data/ESUG2023/*
 
 
 !!!! Social Event