diff --git a/intro/part3/elm.json b/intro/part3/elm.json
index b20be45..fbfc4f8 100644
--- a/intro/part3/elm.json
+++ b/intro/part3/elm.json
@@ -6,13 +6,15 @@
     "elm-version": "0.19.0",
     "dependencies": {
         "direct": {
+            "elm/browser": "1.0.0",
             "elm/core": "1.0.0",
             "elm/html": "1.0.0"
         },
         "indirect": {
             "elm/json": "1.0.0",
             "elm/time": "1.0.0",
-            "elm/url": "1.0.0"
+            "elm/url": "1.0.0",
+            "elm/virtual-dom": "1.0.0"
         }
     },
     "test-dependencies": {
diff --git a/intro/part3/src/Main.elm b/intro/part3/src/Main.elm
index e41e705..418d345 100644
--- a/intro/part3/src/Main.elm
+++ b/intro/part3/src/Main.elm
@@ -25,15 +25,11 @@ initialModel =
 
 
 update msg model =
-    {- 👉 TODO: If `msg.description` is "ClickedTag", then
-                set the model's `selectedTag` field to be `msg.data`
+    if msg.description == "ClickedTag" then
+        { model | selectedTag = msg.data }
 
-       💡 HINT: record update syntax looks like this:
-
-                { model | foo = bar }
-
-    -}
-    model
+    else
+        model
 
 
 
@@ -42,16 +38,8 @@ update msg model =
 
 view model =
     let
-        {- 👉 TODO: Filter the articles down to only the ones
-                    that include the currently selected tag.
-
-           💡 HINT: Replace `True` below with something involving
-                    `List.member`, `article.tags`, and `model.selectedTag`
-
-                    Docs for List.member: http://package.elm-lang.org/packages/elm-lang/core/latest/List#member
-        -}
         articles =
-            List.filter (\article -> True)
+            List.filter (\article -> List.member model.selectedTag article.tags)
                 model.allArticles
 
         feed =
@@ -101,17 +89,7 @@ viewTag selectedTagName tagName =
     in
     button
         [ class ("tag-pill " ++ otherClass)
-
-        {- 👉 TODO: Add an `onClick` handler which sends a msg
-                    that our `update` function above will use
-                    to set the currently selected tag to `tagName`.
-
-           💡 HINT: It should look something like this:
-
-                    , onClick { description = … , data = … }
-
-                    👆 Don't forget to add a comma before `onClick`!
-        -}
+        , onClick { description = "ClickedTag", data = tagName }
         ]
         [ text tagName ]