diff --git a/theories/typing/unsafe/cell.v b/theories/typing/unsafe/cell.v
index 90efb8071f51ede048594ca963c6b087b28cfaf1..1e6232ad52a95ac5e7a4febe5f06ad7d29e918dd 100644
--- a/theories/typing/unsafe/cell.v
+++ b/theories/typing/unsafe/cell.v
@@ -6,6 +6,10 @@ From lrust.typing Require Export type.
 From lrust.typing Require Import typing.
 Set Default Proof Using "Type".
 
+(* TODO: Some changes have recently landed in Rust adding
+   more operations to Cell for non-Copy types. We should make
+   sure we got them all covered. *)
+
 Section cell.
   Context `{typeG Σ}.
   Local Hint Extern 1000 (_ ⊆ _) => set_solver : ndisj.