diff --git a/Three/doc/Three/dependencies b/Three/doc/Three/dependencies
index 5860fb8c516..a01021f28b7 100644
--- a/Three/doc/Three/dependencies
+++ b/Three/doc/Three/dependencies
@@ -4,4 +4,4 @@ STL_Extension
 Algebraic_foundations
 Circulator
 Stream_support
-Lab
+Polyhedron