diff --git a/cmd/task/task.go b/cmd/task/task.go
index 43a35954..2525c97d 100644
--- a/cmd/task/task.go
+++ b/cmd/task/task.go
@@ -17,7 +17,7 @@ var (
 	version = "master"
 )
 
-const usage = `Usage: task [-ilfwvsd] [--init] [--list] [--force] [--watch] [--verbose] [--silent] [--dir] [--dry] [--details] [task...]
+const usage = `Usage: task [-ilfwvsd] [--init] [--list] [--force] [--watch] [--verbose] [--silent] [--dir] [--dry] [--summary] [task...]
 
 Runs the specified task(s). Falls back to the "default" task if no task name
 was specified, or lists all tasks if an unknown task name was specified.