diff --git a/pipeline.go b/pipeline.go
index 67f38ab..b3a8844 100644
--- a/pipeline.go
+++ b/pipeline.go
@@ -10,6 +10,7 @@ type pipelineExecer func([]Cmder) error
 
 type Pipeliner interface {
 	StatefulCmdable
+	Do(args ...interface{}) *Cmd
 	Process(cmd Cmder) error
 	Close() error
 	Discard() error