diff --git a/part4/Main.elm b/part4/Main.elm
index d21ac59..e3019c7 100644
--- a/part4/Main.elm
+++ b/part4/Main.elm
@@ -3,7 +3,7 @@ module Main exposing (..)
 import Html exposing (..)
 import Html.App as Html
 import Html.Attributes exposing (..)
-import Html.Events exposing (onClick)
+import Html.Events exposing (onClick, onInput)
 
 
 type alias Model =