diff --git a/AUTHORS b/AUTHORS
index 409c1695f..e65fb4c44 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -231,3 +231,4 @@ suggestions:
   Lee Lieske
   Peter Vitt
   dev-zero
+  Petteri
diff --git a/ChangeLog b/ChangeLog
index 0bc2fece1..6e06e50af 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -158,6 +158,7 @@
 - TW-1407 'task calendar 2014' leaks.
 - TW-1409 Allow "1 of N tasks remaining" to be correctly localized (thanks to
           Jeremy John Reeder).
+- TW-1415 The recurrence value 'month' is not valid (thanks to Petteri).
 - TW-1428 Add support for color.uda.<name>.<value> rules.
 - Removed deprecated 'echo.command' setting, in favor of the 'header' and
   'affected' verbosity tokens.