diff --git a/ChangeLog b/ChangeLog
index 959b8d3..1159d0a 100755
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,4 @@
-2018-06-15
+2018-07-02
 
         * Version 1.6.0 released
         ========================
@@ -6,6 +6,7 @@
         Transparently update parameter files (#2513)
         Change formula for number of true energy bins in csphagen (#2490)
         Remove ctools::is_valid_filename() method
+        Handle zero model for SUBDIV method in show_response.py (#2456)
         Fix bug when using precomputed model in csresspec (#2448)
         Keep existing library path in installation script on Mac OS X (#2420)
         csphagen produces Xspec compliant data (#2404)
diff --git a/NEWS b/NEWS
index a8141e2..1bf9bac 100755
--- a/NEWS
+++ b/NEWS
@@ -1,6 +1,6 @@
 New Features and Important Changes in ctools 1.6.0
 
-15 June 2018
+2 July 2018
 
 
 Introduction
@@ -340,6 +340,8 @@ Add "mjdref" parameter to set_obs() function (#2054).
 
 Examples
 --------
+Handle zero model values for SUBVID method in show_response.py script (#2456).
+
 Added show_rmf.py script.
 
 
diff --git a/doc/source/admin/release_history/1.6.rst b/doc/source/admin/release_history/1.6.rst
index c50a064..fce0115 100644
--- a/doc/source/admin/release_history/1.6.rst
+++ b/doc/source/admin/release_history/1.6.rst
@@ -17,6 +17,8 @@ In particular, this release provides:
 Bug fixes
 ---------
 
+* [`2456 <https://cta-redmine.irap.omp.eu/issues/2456>`_] -
+  Handle zero model for ``SUBDIV method`` in ``show_response.py``
 * [`2448 <https://cta-redmine.irap.omp.eu/issues/2448>`_] -
   Fix bug when using precomputed model in :ref:`csresspec`
 * [`2420 <https://cta-redmine.irap.omp.eu/issues/2420>`_] -