diff --git a/crates/compiler/builtins/roc/List.roc b/crates/compiler/builtins/roc/List.roc
index 815e957274..277a127a52 100644
--- a/crates/compiler/builtins/roc/List.roc
+++ b/crates/compiler/builtins/roc/List.roc
@@ -53,6 +53,8 @@ interface List
         split,
         splitFirst,
         splitLast,
+        startsWith,
+        endsWith,
         all,
         dropIf,
         sortAsc,