diff --git a/main.go b/main.go
index b295c6b8..6b1c9a0f 100644
--- a/main.go
+++ b/main.go
@@ -52,7 +52,7 @@ Options:
 )
 
 func main() {
-	args, err := docopt.Parse(usage, nil, true, "3.5", false)
+	args, err := docopt.Parse(usage, nil, true, "4.0", false)
 	if err != nil {
 		panic(err)
 	}