diff --git a/Build.PL b/Build.PL
index cce11f6..33b8e88 100755
--- a/Build.PL
+++ b/Build.PL
@@ -64,6 +64,7 @@ my $build = Module::Build->new(
         "File::MMagic"		=> 0,
         "Compress::Zlib"	=> 0,
         "Compress::Bzip2"	=> 2,
+        "IO::Compress::Xz"	=> 0,
         "Term::ReadKey"		=> 0,
     },
     build_requires		=> {
diff --git a/Makefile.PL b/Makefile.PL
index ff52ca0..a10496d 100755
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -54,6 +54,7 @@ our (%OPT_PREREQ);
     "File::MMagic"	=> 0,
     "Compress::Zlib"	=> 0,
     "Compress::Bzip2"	=> 2,
+    "IO::Compress::Xz"	=> 0,
     "Term::ReadKey"	=> 0,
 );
 delete $OPT_PREREQ{$_}