diff --git a/tokio/src/io/lines.rs b/tokio/src/io/lines.rs
index b44e4d1b5..78afa621d 100644
--- a/tokio/src/io/lines.rs
+++ b/tokio/src/io/lines.rs
@@ -1,4 +1,5 @@
 use super::read_line::read_line_internal;
+use futures_core::ready;
 use std::io;
 use std::mem;
 use std::pin::Pin;
diff --git a/tokio/src/io/read_line.rs b/tokio/src/io/read_line.rs
index 987830d96..804d48f98 100644
--- a/tokio/src/io/read_line.rs
+++ b/tokio/src/io/read_line.rs
@@ -1,4 +1,5 @@
 use super::read_until::read_until_internal;
+use futures_core::ready;
 use std::future::Future;
 use std::io;
 use std::mem;
diff --git a/tokio/src/io/read_until.rs b/tokio/src/io/read_until.rs
index 2092176ba..ff28343c5 100644
--- a/tokio/src/io/read_until.rs
+++ b/tokio/src/io/read_until.rs
@@ -1,3 +1,4 @@
+use futures_core::ready;
 use std::future::Future;
 use std::io;
 use std::mem;