diff --git a/docs/backcompat.md b/docs/backcompat.md
index 0d61b65fcc..78e01e46a2 100644
--- a/docs/backcompat.md
+++ b/docs/backcompat.md
@@ -120,7 +120,7 @@ The following are differences between the main Narwhals namespace and `narwhals.
   - `eager_or_interchange_only` has been removed from `from_native` and `narwhalify`.
   - Order-dependent expressions can no longer be used with `narwhals.LazyFrame`.
   - The following expressions have been deprecated from the main namespace: `Expr.head`,
-    `Expr.tail`, `Expr.gather_every`, `Expr.sample`, `Expr.arg_true`.
+    `Expr.tail`, `Expr.gather_every`, `Expr.sample`, `Expr.arg_true`, `Expr.sort`.
 
 - Since Narwhals 1.21, passing a `DuckDBPyRelation` to `from_native` returns a `LazyFrame`. In
   `narwhals.stable.v1`, it returns a `DataFrame` with `level='interchange'`.