diff --git a/serde/src/de/impls.rs b/serde/src/de/impls.rs
index 441fb36e1..1cf3b1a09 100644
--- a/serde/src/de/impls.rs
+++ b/serde/src/de/impls.rs
@@ -1789,6 +1789,9 @@ forwarded_impl!((T), Box<[T]>, Vec::into_boxed_slice);
 #[cfg(any(feature = "std", feature = "alloc"))]
 forwarded_impl!((), Box<str>, String::into_boxed_str);
 
+#[cfg(any(feature = "std", feature = "alloc"))]
+forwarded_impl!((), Box<OsStr>, OsString::into_boxed_os_str);
+
 #[cfg(any(feature = "std", feature = "alloc"))]
 impl<'de, 'a, T: ?Sized> Deserialize<'de> for Cow<'a, T>
 where