diff --git a/src/stream/stream/flatten.rs b/src/stream/stream/flatten.rs
index d0e0d20..13975f7 100644
--- a/src/stream/stream/flatten.rs
+++ b/src/stream/stream/flatten.rs
@@ -1,5 +1,5 @@
-use core::fmt;
-use core::pin::Pin;
+use std::fmt;
+use std::pin::Pin;
 
 use pin_project_lite::pin_project;