diff --git a/crates/uv-fs/src/lib.rs b/crates/uv-fs/src/lib.rs
index ad4a883ad..dcc0f00b2 100644
--- a/crates/uv-fs/src/lib.rs
+++ b/crates/uv-fs/src/lib.rs
@@ -601,6 +601,7 @@ pub fn is_virtualenv_base(path: impl AsRef<Path>) -> bool {
 
 /// A file lock that is automatically released when dropped.
 #[derive(Debug)]
+#[must_use]
 pub struct LockedFile(fs_err::File);
 
 impl LockedFile {