diff --git a/task.go b/task.go
index 8d90a1da..b4b9105b 100644
--- a/task.go
+++ b/task.go
@@ -227,6 +227,9 @@ func (e *Executor) Setup() error {
 		}
 	}
 
+	if v < 3 && e.Taskfile.Run != "" {
+		return errors.New(`task: Setting the "run" type is only available starting on Taskfile version v3`)
+	}
 	if e.Taskfile.Run == "" {
 		e.Taskfile.Run = "always"
 	}
@@ -264,6 +267,11 @@ func (e *Executor) Setup() error {
 		if err != nil {
 			return err
 		}
+		for _, task := range e.Taskfile.Tasks {
+			if task.Run != "" {
+				return errors.New(`task: Setting the "run" type is only available starting on Taskfile version v3`)
+			}
+		}
 	}
 
 	e.execution = make(map[string]context.Context)