diff --git a/browsers.json b/browsers.json
index ea18d90d67..3c77001012 100644
--- a/browsers.json
+++ b/browsers.json
@@ -7,11 +7,11 @@
     },
     {
       "name": "firefox",
-      "revision": "1138"
+      "revision": "1140"
     },
     {
       "name": "webkit",
-      "revision": "1313"
+      "revision": "1317"
     }
   ]
 }