diff --git a/Installation/CHANGES.md b/Installation/CHANGES.md
index 0aad24727d7..2d4f5e24083 100644
--- a/Installation/CHANGES.md
+++ b/Installation/CHANGES.md
@@ -257,9 +257,17 @@ g
 -   Fixed a bug in the surface-sweep framework (Surface_sweep_2) that ensures
     that an event is never left without (left or right) curves.
 
--   Fixed constructor of Arr_counting_traits.h. (In particular, added missing
+-   Fixed a constructor of Arr_counting_traits.h. (In particular, added missing
     const of a parameter).
 
+-   Fixed zone computation of a curve in cases where the lexicographic smallest
+    end of the curve lies on the parameter space.
+
+-   Implemented missing function object Compare_x_near_boundary of
+    Arr_polyline_traits_2, Arr_polycurve_traits_2, and
+    Arr_polycurve_basic_traits_2.
+
+
 Release 4.12
 ------------