diff --git a/xdelta3/xdelta3.1 b/xdelta3/xdelta3.1
index 693171e..7001400 100644
--- a/xdelta3/xdelta3.1
+++ b/xdelta3/xdelta3.1
@@ -1,4 +1,4 @@
-.TH XDELTA3 "1" "August 2009" "Xdelta3"
+.TH XDELTA3 "1" "August 2013" "Xdelta3"
 .SH NAME
 xdelta3 \- VCDIFF (RFC 3284) binary diff tool
 .SH SYNOPSIS
@@ -54,6 +54,9 @@ compress
 .BI \-f
 force overwrite
 .TP
+.BI \-F
+force the external-compression subprocess
+.TP
 .BI \-h
 show help
 .TP
@@ -118,6 +121,9 @@ disable output (check/compute only)
 .TP
 .BI \-T
 use alternate code table (test)
+.TP
+.BI \-m
+arguments for "merge"
 
 .SH NOTES
 The