diff --git a/README b/README
index cd0ef79d..0cc3d78d 100644
--- a/README
+++ b/README
@@ -29,8 +29,8 @@ By using this software you agree to the disclaimer at the end of this text:
 
                    Compilation, First Glimpse, Installation
 
-Dynamic library and compile time header requirements for libisoburn-0.4.4 :
-- libburn.so.4  , version libburn-0.7.2 or higher
+Dynamic library and compile time header requirements for libisoburn-0.4.5 :
+- libburn.so.4  , version libburn-0.7.4 or higher
 - libisofs.so.6 , version libisofs-0.6.24 or higher
 libisoburn and xorriso will not start with libraries which are older than their
 headers seen at compile time.
diff --git a/configure.ac b/configure.ac
index 704280a0..c28a864b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -21,7 +21,7 @@ dnl
 dnl These three are only copies to provide libtool with unused LT_RELEASE
 ISOBURN_MAJOR_VERSION=0
 ISOBURN_MINOR_VERSION=4
-ISOBURN_MICRO_VERSION=3
+ISOBURN_MICRO_VERSION=5
 
 dnl ISOBURN_VERSION=$ISOBURN_MAJOR_VERSION.$ISOBURN_MINOR_VERSION.$ISOBURN_MICRO_VERSION
  
@@ -213,7 +213,7 @@ AC_CHECK_HEADER(libburn/libburn.h)
 AC_CHECK_HEADER(libisofs/libisofs.h)
 
 dnl Check for proper library versions
-LIBBURN_REQUIRED=0.7.3
+LIBBURN_REQUIRED=0.7.4
 LIBISOFS_REQUIRED=0.6.24
 PKG_CHECK_MODULES(LIBBURN, libburn-1 >= $LIBBURN_REQUIRED)
 PKG_CHECK_MODULES(LIBISOFS, libisofs-1 >= $LIBISOFS_REQUIRED)
diff --git a/libisoburn/libisoburn.h b/libisoburn/libisoburn.h
index 593e8914..a25d0f13 100644
--- a/libisoburn/libisoburn.h
+++ b/libisoburn/libisoburn.h
@@ -224,7 +224,7 @@ void isoburn_version(int *major, int *minor, int *micro);
 */
 #define isoburn_libburn_req_major  0
 #define isoburn_libburn_req_minor  7
-#define isoburn_libburn_req_micro  3
+#define isoburn_libburn_req_micro  4
 
 
 /** The minimum version of libisofs to be used with this version of libisoburn
diff --git a/xorriso/README b/xorriso/README
index 62943588..af4305df 100644
--- a/xorriso/README
+++ b/xorriso/README
@@ -59,7 +59,10 @@ Within that directory execute:
 This will produce a binary named
     ./xorriso/xorriso
 
-which you may strip to reduce it in size
+If you want xorriso to report a "Build timestamp" with its option -version :
+    make buildstamped
+
+You may strip the binary to reduce it in size
     strip ./xorriso/xorriso
 
 You may copy or move it to a directory where it can be found by the shell,
@@ -102,20 +105,17 @@ By default the filter feature is disabled if effective user id and real
 user id differ. This ban can be lifted by
     --enable-external-filters-setuid
 
+Sometimes xorriso will yield better write performance on Linux if 64 KB are
+transmitted in each write operation rather than 32 KB. See option -dvd_obs .
+64k can be made default at configure time by:
+    --enable-dvd-obs-64k
+
+For xorriso -as cdrecord emulation only:
 In some situations Linux may deliver a better write performance to drives if
 the track input is read with O_DIRECT (see man 2 open). The included libburn
 and the cdrecord emulation of xorriso can be told to use this peculiar read
 mode by:
-   --enable-track-src-odirect
-
-But often libburn will yield even better performance in such a situation if
-64 KB are transmitted in each write operation rather than 32 KB.
-64k can be made default at configure time by:
-    --enable-dvd-obs-64k
-This may be combined with above --enable-track-src-odirect .
-
-If you want xorriso to report a "Build timestamp" with its option -version:
-    make buildstamped
+    --enable-track-src-odirect
 
 
                        Drives and Disk File Objects 
@@ -275,8 +275,8 @@ and a matching dynamically linked xorriso binary.
 This binary is leaner but depends on properly installed libraries of suitable
 revision.
 
-Dynamic library and compile time header requirements for libisoburn-0.4.0 :
-- libburn.so.4  , version libburn-0.7.2 or higher
+Dynamic library and compile time header requirements for libisoburn-0.4.5 :
+- libburn.so.4  , version libburn-0.7.4 or higher
 - libisofs.so.6 , version libisofs-0.6.24 or higher
 libisoburn and xorriso will not start with libraries which are older than their
 headers seen at compile time. So compile in the oldest possible installation
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index 70f8a132..7d8bde00 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2009.11.28.124241"
+#define Xorriso_timestamP "2009.12.07.082130"