diff --git a/pkgtool.pm b/pkgtool.pm
index 40f509d..b5faf34 100644
--- a/pkgtool.pm
+++ b/pkgtool.pm
@@ -754,6 +754,39 @@ sub read_os_patches ($$$)
 			}
 			print_log('global', DEBUG3, 'Found OS patch information for %s: kbnum=%s current=%s', $kb, $number, $$p{Current});
 		}
+		elsif ($installname =~ /^Package_for_([0-9a-zA-Z_]+)~/o) {
+			my $kb = $1;
+			if ($installname =~ /^[^~]*~[^~]*~[^~]*~[^~]*~(\d+(\.\d+)*)/o) {
+				my $version = $1;
+				if (defined $version && $version ne '') {
+					my @versionlist = split /\./, $version;
+					my $revnum = $versionlist[2];
+					if (defined $revnum && $revnum =~ /^\d+$/o && $revnum > 1) {
+						$kb .= 'v'.$revnum;
+					}
+				}
+			}
+			my $p = $$patches{$kb};
+			if (! defined $p) {
+				$p = $$patches{$kb} = {
+					Type => 'OS',
+					Packages => { OS => 1 },
+					InstallName => $name,
+					InstallClient => $installclient,
+					Original => $original,
+					Update => $update,
+					KB => $kb,
+					Number => $kb,
+					Current => 0,
+					Flags => 0
+				};
+			}
+			if (defined $state) {
+				$$p{Flags} |= $state;
+				$$p{Current} = 1 if $state & 0x20;
+			}
+			print_log('global', DEBUG3, 'Found OS patch information for %s: kbnum=%s current=%s', $kb, $kb, $$p{Current});
+		}
 		if ($name =~ /^([^~]*)~([^~]*)~([^~]*)~([^~]*)~([^~]*)$/o) {
 			my $pkg = $$pkgs{$name};
 			if (! defined $pkg) {