diff --git a/NEWS b/NEWS
index 7f1f0976..e88cb8b3 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,4 @@
-User-visible changes in version 1.3.1  (2016-12-19):
+User-visible changes in version 1.3.1  (2016-12-21):
 * GUI: more options in the peak-top menu
 * GUI: Tools > XPS KE <-> BE
 * added utilities F.findx(), F.extremum(), centile(N, expr), %peak.IB
diff --git a/wxgui/about.cpp b/wxgui/about.cpp
index 31b63ff1..62557a03 100644
--- a/wxgui/about.cpp
+++ b/wxgui/about.cpp
@@ -58,7 +58,7 @@ AboutDlg::AboutDlg(wxWindow* parent)
     txt->AppendText(wxT(" and xylib ") + pchar2wx(xylib_get_version())
                     + wxT("\n"));
     txt->SetDefaultStyle(wxTextAttr(wxNullColour, bg_col, *wxNORMAL_FONT));
-    txt->AppendText(wxT("\nCopyright 2001 - 2015 Marcin Wojdyr\n\n"));
+    txt->AppendText(wxT("\nCopyright 2001 - 2016 Marcin Wojdyr\n\n"));
     txt->SetDefaultStyle(wxTextAttr(wxNullColour, bg_col, *wxSMALL_FONT));
     txt->AppendText(
    wxT("This program is free software; you can redistribute it and/or modify ")