diff --git a/lib/HMF/Pipeline.pm b/lib/HMF/Pipeline.pm
index e5fac8f..7463a70 100644
--- a/lib/HMF/Pipeline.pm
+++ b/lib/HMF/Pipeline.pm
@@ -24,7 +24,7 @@ use HMF::Pipeline::PipelineCheck;
 
 use parent qw(Exporter);
 our @EXPORT_OK = qw(lockRun run);
-our $VERSION = 'v4.1';
+our $VERSION = 'v4.0';
 
 sub run {
     my ($opt) = @_;