diff --git a/index.html b/index.html
index ad8edd8..4caa56f 100644
--- a/index.html
+++ b/index.html
@@ -50,7 +50,7 @@
       };
     </script>
   </head>
-  <body data-cite="service-workers FILEAPI secure-contexts">
+  <body data-cite="service-workers FILEAPI secure-contexts hr-time">
     <section id="abstract">
       <p>
         The <cite>Push API</cite> enables sending of a <a>push message</a> to a web application via
@@ -750,7 +750,7 @@ <h2>
         [Exposed=(Window,Worker), SecureContext]
         interface PushSubscription {
           readonly attribute USVString endpoint;
-          readonly attribute DOMTimeStamp? expirationTime;
+          readonly attribute EpochTimeStamp? expirationTime;
           [SameObject] readonly attribute PushSubscriptionOptions options;
           ArrayBuffer? getKey(PushEncryptionKeyName name);
           Promise&lt;boolean&gt; unsubscribe();
@@ -760,7 +760,7 @@ <h2>
 
         dictionary PushSubscriptionJSON {
           USVString endpoint;
-          DOMTimeStamp? expirationTime;
+          EpochTimeStamp? expirationTime = null;
           record&lt;DOMString, USVString&gt; keys;
         };
       </pre>
