diff --git a/ChangeLog b/ChangeLog
index 402690d..f32830f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+Sun Sep 5 2010 Valient Gough <vgough@pobox.com>
+	* fix mount failures when using certain options, due to changes in
+	  option passing mechanism in 1.7
+	* allow per-block random bytes to be configured independently of
+	  per-block MAC.
+	* bundle as version 1.7.2
+
 Sun Aug 29 2010 Valient Gough <vgough@pobox.com>
 	* new IV initialization
 	* tag version 1.7
diff --git a/configure.ac b/configure.ac
index b7400c4..c433bc9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 dnl Process this file with autoconf to produce a configure script.
 
 AC_INIT(encfs/encfs.h) dnl a source file from your sub dir
-AM_INIT_AUTOMAKE(encfs, 1.7.1) dnl searches for some needed programs
+AM_INIT_AUTOMAKE(encfs, 1.7.2) dnl searches for some needed programs
 
 AC_CANONICAL_HOST
 AM_CONDITIONAL([DARWIN],
diff --git a/encfs/MACFileIO.cpp b/encfs/MACFileIO.cpp
index 061d8da..816e64b 100644
--- a/encfs/MACFileIO.cpp
+++ b/encfs/MACFileIO.cpp
@@ -41,13 +41,14 @@ static RLogChannel *Info = DEF_CHANNEL("info/MACFileIO", Log_Info);
 // Version 2.0 takes [blockSize - headerSize] worth of user data and writes
 //   [blockSize] bytes.  That way the size going into the crypto engine is
 //   valid from what was selected based on the crypto module allowed ranges!
+// Version 2.1 allows per-block rand bytes to be used without enabling MAC.
 //
 // The information about MACFileIO currently does not make its way into the
 // configuration file, so there is no easy way to make this backward
 // compatible, except at a high level by checking a revision number for the
 // filesystem...
 //
-static rel::Interface MACFileIO_iface("FileIO/MAC", 2, 0, 0);
+static rel::Interface MACFileIO_iface("FileIO/MAC", 2, 1, 0);
 
 int dataBlockSize(const FSConfigPtr &cfg)
 {