diff --git a/wit/key-value.wit b/wit/key-value.wit
index 8ccd0f2..871131b 100644
--- a/wit/key-value.wit
+++ b/wit/key-value.wit
@@ -8,6 +8,8 @@ interface key-value {
     ///
     /// Returns `ok(none)` if the key does not exist.
     get: func(key: string) -> result<option<list<u8>>, error>;
+
+    get-by-index: func(key: string, index: u32) -> result<option<list<u8>>, error>;
   }
 
   /// The set of errors which may be raised by functions in this interface