diff --git a/composer.json b/composer.json
index 1209fbf..b3d2cfb 100644
--- a/composer.json
+++ b/composer.json
@@ -4,7 +4,8 @@
     "type": "library",
     "require": {
         "php": ">=5.6.0",
-        "guzzlehttp/guzzle": "^6.2"
+        "guzzlehttp/guzzle": "^6.2",
+        "ramsey/uuid": "^3.5"
     },
     "require-dev": {
         "phpunit/phpunit": "^5.7"
diff --git a/composer.lock b/composer.lock
index 16a0352..b8f4ece 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "content-hash": "ea7b67ee95c008ad9aa44290aac21570",
+    "content-hash": "962062bf3027b92374bddb500df0f997",
     "packages": [
         {
             "name": "guzzlehttp/guzzle",
@@ -177,6 +177,54 @@
             ],
             "time": "2016-06-24T23:00:38+00:00"
         },
+        {
+            "name": "paragonie/random_compat",
+            "version": "v2.0.4",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/paragonie/random_compat.git",
+                "reference": "a9b97968bcde1c4de2a5ec6cbd06a0f6c919b46e"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/paragonie/random_compat/zipball/a9b97968bcde1c4de2a5ec6cbd06a0f6c919b46e",
+                "reference": "a9b97968bcde1c4de2a5ec6cbd06a0f6c919b46e",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.2.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "4.*|5.*"
+            },
+            "suggest": {
+                "ext-libsodium": "Provides a modern crypto API that can be used to generate random bytes."
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "lib/random.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Paragon Initiative Enterprises",
+                    "email": "security@paragonie.com",
+                    "homepage": "https://paragonie.com"
+                }
+            ],
+            "description": "PHP 5.x polyfill for random_bytes() and random_int() from PHP 7",
+            "keywords": [
+                "csprng",
+                "pseudorandom",
+                "random"
+            ],
+            "time": "2016-11-07T23:38:38+00:00"
+        },
         {
             "name": "psr/http-message",
             "version": "1.0.1",
@@ -226,6 +274,88 @@
                 "response"
             ],
             "time": "2016-08-06T14:39:51+00:00"
+        },
+        {
+            "name": "ramsey/uuid",
+            "version": "3.5.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/ramsey/uuid.git",
+                "reference": "5677cfe02397dd6b58c861870dfaa5d9007d3954"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/ramsey/uuid/zipball/5677cfe02397dd6b58c861870dfaa5d9007d3954",
+                "reference": "5677cfe02397dd6b58c861870dfaa5d9007d3954",
+                "shasum": ""
+            },
+            "require": {
+                "paragonie/random_compat": "^1.0|^2.0",
+                "php": ">=5.4"
+            },
+            "replace": {
+                "rhumsaa/uuid": "self.version"
+            },
+            "require-dev": {
+                "apigen/apigen": "^4.1",
+                "codeception/aspect-mock": "1.0.0",
+                "doctrine/annotations": "~1.2.0",
+                "goaop/framework": "1.0.0-alpha.2",
+                "ircmaxell/random-lib": "^1.1",
+                "jakub-onderka/php-parallel-lint": "^0.9.0",
+                "mockery/mockery": "^0.9.4",
+                "moontoast/math": "^1.1",
+                "php-mock/php-mock-phpunit": "^0.3|^1.1",
+                "phpunit/phpunit": "^4.7|>=5.0 <5.4",
+                "satooshi/php-coveralls": "^0.6.1",
+                "squizlabs/php_codesniffer": "^2.3"
+            },
+            "suggest": {
+                "ext-libsodium": "Provides the PECL libsodium extension for use with the SodiumRandomGenerator",
+                "ext-uuid": "Provides the PECL UUID extension for use with the PeclUuidTimeGenerator and PeclUuidRandomGenerator",
+                "ircmaxell/random-lib": "Provides RandomLib for use with the RandomLibAdapter",
+                "moontoast/math": "Provides support for converting UUID to 128-bit integer (in string form).",
+                "ramsey/uuid-console": "A console application for generating UUIDs with ramsey/uuid",
+                "ramsey/uuid-doctrine": "Allows the use of Ramsey\\Uuid\\Uuid as Doctrine field type."
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Ramsey\\Uuid\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Marijn Huizendveld",
+                    "email": "marijn.huizendveld@gmail.com"
+                },
+                {
+                    "name": "Thibaud Fabre",
+                    "email": "thibaud@aztech.io"
+                },
+                {
+                    "name": "Ben Ramsey",
+                    "email": "ben@benramsey.com",
+                    "homepage": "https://benramsey.com"
+                }
+            ],
+            "description": "Formerly rhumsaa/uuid. A PHP 5.4+ library for generating RFC 4122 version 1, 3, 4, and 5 universally unique identifiers (UUID).",
+            "homepage": "https://github.com/ramsey/uuid",
+            "keywords": [
+                "guid",
+                "identifier",
+                "uuid"
+            ],
+            "time": "2016-11-22T19:21:44+00:00"
         }
     ],
     "packages-dev": [
diff --git a/src/Renderer.php b/src/Renderer.php
index 91156a1..289ee71 100644
--- a/src/Renderer.php
+++ b/src/Renderer.php
@@ -214,10 +214,12 @@ protected function fallback($topLevelError, $jobs)
      */
     protected function getFallbackHTML($moduleName, $data)
     {
+        $uuid = \Ramsey\Uuid\Uuid::uuid4();
         return sprintf(
-            '<div data-hypernova-key="%1$s"></div>
-    <script type="application/json" data-hypernova-key="%1$s"><!--%2$s--></script>',
+            '<div data-hypernova-key="%1$s" data-hypernova-id="%2$s"></div>
+    <script type="application/json" data-hypernova-key="%1$s" data-hypernova-id="%2$s"><!--%3$s--></script>',
             $moduleName,
+            $uuid,
             json_encode($data)
         );
     }