diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2f84268..3fbcb2c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,7 +7,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased](https://github.com/rust-embedded-community/menu/compare/v0.6.0...master)
 
-* None
+### Changed
+
+* For `Runner::input_byte` the buffer `B` does not need to be `Sized`
 
 ## [v0.6.0] - 2024-08-30
 
diff --git a/src/lib.rs b/src/lib.rs
index 13d69e0..00159c4 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -374,7 +374,7 @@ where
 impl<'a, I, T, B> Runner<'a, I, T, B>
 where
     I: embedded_io::Write,
-    B: AsMut<[u8]>,
+    B: AsMut<[u8]> + ?Sized,
 {
     /// Add a byte to the menu runner's buffer. If this byte is a
     /// carriage-return, the buffer is scanned and the appropriate action