diff --git a/tokio-stream/src/stream_ext.rs b/tokio-stream/src/stream_ext.rs
index a7bc2044f..7f9501026 100644
--- a/tokio-stream/src/stream_ext.rs
+++ b/tokio-stream/src/stream_ext.rs
@@ -113,6 +113,12 @@ pub trait StreamExt: Stream {
     /// pinning it to the stack using the `pin_mut!` macro from the `pin_utils`
     /// crate.
     ///
+    /// # Cancel safety
+    ///
+    /// This method is cancel safe. The returned future only
+    /// holds onto a reference to the underlying stream,
+    /// so dropping it will never lose a value.
+    ///
     /// # Examples
     ///
     /// ```
@@ -149,6 +155,12 @@ pub trait StreamExt: Stream {
     /// an [`Option<Result<T, E>>`](Option), making for easy use
     /// with the [`?`](std::ops::Try) operator.
     ///
+    /// # Cancel safety
+    ///
+    /// This method is cancel safe. The returned future only
+    /// holds onto a reference to the underlying stream,
+    /// so dropping it will never lose a value.
+    ///
     /// # Examples
     ///
     /// ```
diff --git a/tokio-stream/src/stream_ext/next.rs b/tokio-stream/src/stream_ext/next.rs
index 175490c48..706069fa6 100644
--- a/tokio-stream/src/stream_ext/next.rs
+++ b/tokio-stream/src/stream_ext/next.rs
@@ -8,6 +8,13 @@ use pin_project_lite::pin_project;
 
 pin_project! {
     /// Future for the [`next`](super::StreamExt::next) method.
+    ///
+    /// # Cancel safety
+    ///
+    /// This method is cancel safe. It only
+    /// holds onto a reference to the underlying stream,
+    /// so dropping it will never lose a value.
+    ///
     #[derive(Debug)]
     #[must_use = "futures do nothing unless you `.await` or poll them"]
     pub struct Next<'a, St: ?Sized> {
diff --git a/tokio-stream/src/stream_ext/try_next.rs b/tokio-stream/src/stream_ext/try_next.rs
index af27d87d8..93aa3bc15 100644
--- a/tokio-stream/src/stream_ext/try_next.rs
+++ b/tokio-stream/src/stream_ext/try_next.rs
@@ -9,6 +9,12 @@ use pin_project_lite::pin_project;
 
 pin_project! {
     /// Future for the [`try_next`](super::StreamExt::try_next) method.
+    ///
+    /// # Cancel safety
+    ///
+    /// This method is cancel safe. It only
+    /// holds onto a reference to the underlying stream,
+    /// so dropping it will never lose a value.
     #[derive(Debug)]
     #[must_use = "futures do nothing unless you `.await` or poll them"]
     pub struct TryNext<'a, St: ?Sized> {