diff --git a/src/generator/templates/api/api.rs.mako b/src/generator/templates/api/api.rs.mako
index 4de2146c9c..8bab33388c 100644
--- a/src/generator/templates/api/api.rs.mako
+++ b/src/generator/templates/api/api.rs.mako
@@ -24,11 +24,11 @@ use serde_json as json;
 use std::io;
 use std::fs;
 use std::mem;
-use std::thread::sleep;
 
 use http::Uri;
 use hyper::client::connect;
 use tokio::io::{AsyncRead, AsyncWrite};
+use tokio::time::sleep;
 use tower_service;
 use serde::{Serialize, Deserialize};