diff --git a/principles_practices/index.html b/principles_practices/index.html
index e922f6625e5ccaaaa569d5c3d295bdb106e50db7..71fb5b75b87311850e9c1f48d214f9afe5e829fd 100755
--- a/principles_practices/index.html
+++ b/principles_practices/index.html
@@ -10,7 +10,7 @@
 
 <div style="font-size:125%;margin-left:2.5%">
 <pre><font face="bitstream vera sans,arial,helvetica,sans-serif">
-<b><a href=http://ng.cba.mit.edu/show/script/23.09.fab.html>digital fabrication</a></b> ('h' for help, 'i' for index, videos linked)
+<b><a href=http://ng.cba.mit.edu/show/script/24.09.fab.html>digital fabrication</a></b> ('h' for help, 'i' for index, videos linked)
 
 <b><a href=http://fab.cba.mit.edu/about/faq/>links</a></b>