diff --git a/Packages/Polygon/long_description.txt b/Packages/Polygon/changes.txt
similarity index 96%
rename from Packages/Polygon/long_description.txt
rename to Packages/Polygon/changes.txt
index 755f75321c8..829d1f2b1de 100644
--- a/Packages/Polygon/long_description.txt
+++ b/Packages/Polygon/changes.txt
@@ -1,3 +1,11 @@
+//-----------------------------------------------------------------------//
+//           Changes from 2.0 to 2.1:
+//-----------------------------------------------------------------------//
+
+New polygon_assertions.h, generated by the new script (CGAL namespace proof).
+Replaced #include <CGAL/std/...> by #include <...>
+Replaced CGAL_STD by std.
+
 //-----------------------------------------------------------------------//
 //           Changes from 1.13 to 2.0:
 //-----------------------------------------------------------------------//
diff --git a/Packages/Polygon/version b/Packages/Polygon/version
index a66bae2e842..8aea255d148 100644
--- a/Packages/Polygon/version
+++ b/Packages/Polygon/version
@@ -1 +1 @@
-2.0 (3 Mar 1999)
+2.1 (9 Mar 1999)