diff --git a/NEWS b/NEWS
index 22294b0db..212d3b69d 100644
--- a/NEWS
+++ b/NEWS
@@ -35,6 +35,14 @@ What's new in Sudo 1.8.10?
    server.  If netgroups are not needed, this option can be disabled
    to reduce the load on the LDAP server.
 
+ * Sudo is once again able to open the sudoers file when the group
+   on sudoers doesn't match the expected value, so long as the file
+   is not group writable.
+
+ * Sudo now installs an init.d script to clear the time stamp
+   directory at boot time on AIX and HP-UX systems.  These systems
+   either lack /var/run or do not clear it on boot.
+
 What's new in Sudo 1.8.9p5?
 
  * Fixed a compilation error on AIX when LDAP support is enabled.
diff --git a/doc/UPGRADE b/doc/UPGRADE
index 1a21ab580..026faaeac 100644
--- a/doc/UPGRADE
+++ b/doc/UPGRADE
@@ -12,6 +12,10 @@ o Upgrading from a version prior to 1.8.10:
     important that the time stamp files not persist when the system
     reboots.  For this reason, ther default location for the time
     stamp files has changed back to a directory located in /var/run.
+    Systems that do not have /var/run (e.g. AIX) or that do not clear
+    it on boot (e.g. HP-UX) will need to clear the time stamp
+    directory via a startup script.  Such a script is installed by
+    default on AIX and HP-UX systems.
 
     Because there is now a single time stamp file per user, the -K
     option will remove all of the user's time stamps, not just the