diff --git a/doc/texinfo/license.texi b/doc/texinfo/license.texi
index 04485f7b18c917298d92cbba8ba2a5c7e9e35049..33c8b1dfb15f1e3dd2de6efe0f37e0b7e9e1aa85 100644
--- a/doc/texinfo/license.texi
+++ b/doc/texinfo/license.texi
@@ -5,13 +5,15 @@ Gmsh is provided under the terms of the GNU General Public License
 (GPL) with the following exception:
 
   The copyright holders of Gmsh give you permission to combine Gmsh
-  with code included in the standard release of Triangle (written by
-  Jonathan Shewchuk), TetGen (written by Hang Si) and Netgen (written
-  by Joachim Sch"oberl) under their respective licenses. You may copy
-  and distribute such a system following the terms of the GNU GPL for
-  Gmsh and the licenses of the other code concerned, provided that you
-  include the source code of that other code when and as the GNU GPL
-  requires distribution of source code.
+  with code included in the standard release of TetGen (from Hang Si),
+  Netgen (from Joachim Sch"oberl), Chaco (from Bruce Hendrickson and
+  Robert Leland at Sandia National Laboratories) and METIS (from
+  George Karypis at the University of Minnesota) under their
+  respective licenses. You may copy and distribute such a system
+  following the terms of the GNU GPL for Gmsh and the licenses of the
+  other code concerned, provided that you include the source code of
+  that other code when and as the GNU GPL requires distribution of
+  source code.
 
   Note that people who make modified versions of Gmsh are not
   obligated to grant this special exception for their modified