diff --git a/demo/6.0/cgallab.zip b/demo/6.0/cgallab.zip
new file mode 120000
index 000000000..68a1409f5
--- /dev/null
+++ b/demo/6.0/cgallab.zip
@@ -0,0 +1 @@
+../5.6/polyhedron_3.zip
\ No newline at end of file