diff --git a/Build.PL b/Build.PL
index a7670bf..4e9d3d0 100644
--- a/Build.PL
+++ b/Build.PL
@@ -12,8 +12,8 @@ $build = Module::Build->new(
         # 5.6.x is way too buggy and has no unicode support
         # for us. SOAP-WSDL relies on unicode (WS-I demands it)
         # and triggers several 5.6 bugs...
-        'perl'                    => q(5.8.0),
-        'Class::Std::Fast'        => q(0.0.5),
+        'perl'                    => q(5.008),
+        'Class::Std::Fast'        => q(0.000005),
         'Data::Dumper'            => 0,
         'Date::Parse'             => 0,
         'Date::Format'            => 0,
@@ -28,7 +28,7 @@ $build = Module::Build->new(
         'XML::Parser::Expat'      => 0,
     },
     build_requires => {
-        'Class::Std::Fast'        => q(0.0.5),
+        'Class::Std::Fast'        => q(0.000005),
         'Cwd'                     => 0,
         'Date::Parse'             => 0,
         'Date::Format'            => 0,