diff --git a/aio/src/index.html b/aio/src/index.html
index a0f49c4d2b..2fb27da8e7 100644
--- a/aio/src/index.html
+++ b/aio/src/index.html
@@ -21,9 +21,10 @@
   <link rel="apple-touch-icon-precomposed" sizes="144x144" href="assets/images/favicons/favicon-144x144.png">
 
   <!-- NOTE: These need to be kept in sync with `ngsw-config.json`. -->
-  <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
-  <link href="https://fonts.googleapis.com/css?family=Droid+Sans+Mono" rel="stylesheet">
-  <link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">
+  <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,400,500">
+  <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Droid+Sans+Mono">
+  <link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">
+  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
   <!-- -->
 
   <link rel="manifest" href="pwa-manifest.json">