diff --git a/packages/playwright-core/browsers.json b/packages/playwright-core/browsers.json
index 6dad66e8fc..d21d1c67e7 100644
--- a/packages/playwright-core/browsers.json
+++ b/packages/playwright-core/browsers.json
@@ -27,7 +27,7 @@
     },
     {
       "name": "webkit",
-      "revision": "2035",
+      "revision": "2036",
       "installByDefault": true,
       "revisionOverrides": {
         "mac10.14": "1446",
diff --git a/packages/playwright-core/src/server/webkit/protocol.d.ts b/packages/playwright-core/src/server/webkit/protocol.d.ts
index 389ce6b7ac..ba9ba9e5d3 100644
--- a/packages/playwright-core/src/server/webkit/protocol.d.ts
+++ b/packages/playwright-core/src/server/webkit/protocol.d.ts
@@ -2122,6 +2122,10 @@ export module Protocol {
        * Array of <code>DOMNode</code> ids of any children marked as selected.
        */
       selectedChildNodeIds?: NodeId[];
+      /**
+       * On / off state of switch form controls.
+       */
+      switchState?: "off"|"on";
     }
     /**
      * A structure holding an RGBA color.