1 files changed, 4 insertions, 2 deletions
diff --git a/core/ops.rs b/core/ops.rs
index cce454348..3a4f51b83 100644
--- a/core/ops.rs
+++ b/core/ops.rs
@@ -3,13 +3,15 @@ pub use crate::libdeno::OpId;
 use crate::PinnedBuf;
 use futures::Future;
 use std::collections::HashMap;
+use std::pin::Pin;
 
 pub type Buf = Box<[u8]>;
 
-pub type OpAsyncFuture<E> = Box<dyn Future<Item = Buf, Error = E> + Send>;
+pub type OpAsyncFuture<E> =
+  Pin<Box<dyn Future<Output = Result<Buf, E>> + Send>>;
 
 pub(crate) type PendingOpFuture =
-  Box<dyn Future<Item = (OpId, Buf), Error = CoreError> + Send>;
+  Pin<Box<dyn Future<Output = Result<(OpId, Buf), CoreError>> + Send>>;
 
 pub type OpResult<E> = Result<Op<E>, E>;