diff --git a/include/list/typed_list.h b/include/list/typed_list.h
index eeabe52..6869515 100644
--- a/include/list/typed_list.h
+++ b/include/list/typed_list.h
@@ -50,6 +50,7 @@
   } while (0)
 #define list_pop(LP) (LP->count -= 1)
 
+#define list_set(LP, IDX, ITEM) LP->items[IDX] = ITEM
 #define list_get(LP, IDX) LP->items[IDX]
 
 #define list_merge(T, ARENA, DST, LP1, LP2)                                    \