diff --git a/xorriso/disk_ops.h b/xorriso/disk_ops.h
index fbce0f69..f4b301c5 100644
--- a/xorriso/disk_ops.h
+++ b/xorriso/disk_ops.h
@@ -112,6 +112,9 @@ int Xorriso_make_mount_cmd(struct XorrisO *xorriso, char *cmd,
 
 int Xorriso_append_scdbackup_record(struct XorrisO *xorriso, int flag);
 
+int Xorriso_concat(struct XorrisO *xorriso, char *mode, char *target,
+                   int progc, char **progv,
+                   int filec, char **filev, int flag);
 
 #endif /* ! Xorriso_pvt_diskop_includeD */
 
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index efcdfc1f..e77c8cad 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2014.06.13.090244"
+#define Xorriso_timestamP "2014.06.14.185146"