diff --git a/browsers.json b/browsers.json
index 0ab7582f5c..8e4517c829 100644
--- a/browsers.json
+++ b/browsers.json
@@ -13,7 +13,7 @@
     },
     {
       "name": "webkit",
-      "revision": "1423",
+      "revision": "1428",
       "download": true
     }
   ]
diff --git a/src/server/webkit/protocol.ts b/src/server/webkit/protocol.ts
index 7898d5fd85..9d1d983adb 100644
--- a/src/server/webkit/protocol.ts
+++ b/src/server/webkit/protocol.ts
@@ -1465,7 +1465,7 @@ export module Protocol {
     /**
      * Channels for different types of log messages.
      */
-    export type ChannelSource = "xml"|"javascript"|"network"|"console-api"|"storage"|"appcache"|"rendering"|"css"|"security"|"content-blocker"|"media"|"mediasource"|"webrtc"|"itp-debug"|"private-click-measurement"|"other";
+    export type ChannelSource = "xml"|"javascript"|"network"|"console-api"|"storage"|"appcache"|"rendering"|"css"|"security"|"content-blocker"|"media"|"mediasource"|"webrtc"|"itp-debug"|"private-click-measurement"|"payment-request"|"other";
     /**
      * Level of logging.
      */