diff --git a/README.md b/README.md
index 4342b798..1b738472 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Speedtest Tracker
 
-[![Docker pulls](https://img.shields.io/docker/pulls/henrywhitaker3/speedtest-tracker?style=flat-square)](https://hub.docker.com/r/henrywhitaker3/speedtest-tracker) [![GitHub Workflow Status](https://img.shields.io/github/workflow/status/henrywhitaker3/Speedtest-Tracker/Stable?label=master&logo=github&style=flat-square)](https://github.com/henrywhitaker3/Speedtest-Tracker/actions) [![GitHub Workflow Status](https://img.shields.io/github/workflow/status/henrywhitaker3/Speedtest-Tracker/Dev?label=dev&logo=github&style=flat-square)](https://github.com/henrywhitaker3/Speedtest-Tracker/actions) [![last_commit](https://img.shields.io/github/last-commit/henrywhitaker3/Speedtest-Tracker?style=flat-square)](https://github.com/henrywhitaker3/Speedtest-Tracker/commits) [![issues](https://img.shields.io/github/issues/henrywhitaker3/Speedtest-Tracker?style=flat-square)](https://github.com/henrywhitaker3/Speedtest-Tracker/issues) [![commit_freq](https://img.shields.io/github/commit-activity/m/henrywhitaker3/Speedtest-Tracker?style=flat-square)](https://github.com/henrywhitaker3/Speedtest-Tracker/commits) ![version](https://img.shields.io/badge/version-v1.11.0-success?style=flat-square) [![license](https://img.shields.io/github/license/henrywhitaker3/Speedtest-Tracker?style=flat-square)](https://github.com/henrywhitaker3/Speedtest-Tracker/blob/master/LICENSE)
+[![Docker pulls](https://img.shields.io/docker/pulls/henrywhitaker3/speedtest-tracker?style=flat-square)](https://hub.docker.com/r/henrywhitaker3/speedtest-tracker) [![GitHub Workflow Status](https://img.shields.io/github/workflow/status/henrywhitaker3/Speedtest-Tracker/Stable?label=master&logo=github&style=flat-square)](https://github.com/henrywhitaker3/Speedtest-Tracker/actions) [![GitHub Workflow Status](https://img.shields.io/github/workflow/status/henrywhitaker3/Speedtest-Tracker/Dev?label=dev&logo=github&style=flat-square)](https://github.com/henrywhitaker3/Speedtest-Tracker/actions) [![last_commit](https://img.shields.io/github/last-commit/henrywhitaker3/Speedtest-Tracker?style=flat-square)](https://github.com/henrywhitaker3/Speedtest-Tracker/commits) [![issues](https://img.shields.io/github/issues/henrywhitaker3/Speedtest-Tracker?style=flat-square)](https://github.com/henrywhitaker3/Speedtest-Tracker/issues) [![commit_freq](https://img.shields.io/github/commit-activity/m/henrywhitaker3/Speedtest-Tracker?style=flat-square)](https://github.com/henrywhitaker3/Speedtest-Tracker/commits) ![version](https://img.shields.io/badge/version-v1.11.1-success?style=flat-square) [![license](https://img.shields.io/github/license/henrywhitaker3/Speedtest-Tracker?style=flat-square)](https://github.com/henrywhitaker3/Speedtest-Tracker/blob/master/LICENSE)
 
 This program runs a speedtest check every hour and graphs the results. The back-end is written in [Laravel](https://laravel.com/) and the front-end uses [React](https://reactjs.org/). It uses the [Ookla's speedtest cli](https://www.speedtest.net/apps/cli) package to get the data and uses [Chart.js](https://www.chartjs.org/) to plot the results.
 
diff --git a/app/Helpers/SpeedtestHelper.php b/app/Helpers/SpeedtestHelper.php
index b75fbd83..b4bf3e10 100644
--- a/app/Helpers/SpeedtestHelper.php
+++ b/app/Helpers/SpeedtestHelper.php
@@ -228,4 +228,42 @@ class SpeedtestHelper
 
         throw new InvalidArgumentException();
     }
+
+    /**
+     * Get a percentage rate of failure by days
+     *
+     * @param integer $days number of days to get rate for
+     * @return integer percentage fail rate
+     */
+    public static function failureRate(int $days)
+    {
+        $ttl = Carbon::now()->addDays(1);
+        $rate = Cache::remember('failure-rate-' . $days, $ttl, function () use ($days) {
+            $range = [
+                Carbon::today()
+            ];
+            for ($i = 0; $i < ($days - 1); $i++) {
+                $prev = end($range);
+                $new = $prev->copy()->subDays(1);
+                array_push($range, $new);
+            }
+
+            $rate = [];
+
+            foreach ($range as $day) {
+                $success = Speedtest::select(DB::raw('COUNT(id) as rate'))->whereDate('created_at', $day)->where('failed', false)->get()[0]['rate'];
+                $fail = Speedtest::select(DB::raw('COUNT(id) as rate'))->whereDate('created_at', $day)->where('failed', true)->get()[0]['rate'];
+
+                array_push($rate, [
+                    'date' => $day->toDateString(),
+                    'success' => $success,
+                    'failure' => $fail,
+                ]);
+            }
+
+            return array_reverse($rate);
+        });
+
+        return $rate;
+    }
 }
diff --git a/app/Utils/OoklaTester.php b/app/Utils/OoklaTester.php
index c7e275e0..74e617da 100644
--- a/app/Utils/OoklaTester.php
+++ b/app/Utils/OoklaTester.php
@@ -55,7 +55,7 @@ class OoklaTester implements SpeedtestProvider
                 'scheduled' => $scheduled,
             ]);
 
-            throw new SpeedtestFailureException((string)$output);
+            throw new SpeedtestFailureException(json_encode($output));
         }
 
         Cache::flush();
diff --git a/config/speedtest.php b/config/speedtest.php
index 18d0b0a8..1db30b80 100644
--- a/config/speedtest.php
+++ b/config/speedtest.php
@@ -7,7 +7,7 @@ return [
     |--------------------------------------------------------------------------
     */
 
-    'version' => '1.11.0',
+    'version' => '1.11.1',
 
     /*
     |--------------------------------------------------------------------------
diff --git a/tests/Unit/Helpers/SpeedtestHelper/CheckOutputTest.php b/tests/Unit/Helpers/SpeedtestHelper/CheckOutputTest.php
index db99df80..d017cb7b 100644
--- a/tests/Unit/Helpers/SpeedtestHelper/CheckOutputTest.php
+++ b/tests/Unit/Helpers/SpeedtestHelper/CheckOutputTest.php
@@ -9,7 +9,7 @@ class CheckOutputTest extends TestCase
 {
     private OoklaTester $speedtestProvider;
 
-    public function __construct()
+    public function setUp(): void
     {
         $this->speedtestProvider = new OoklaTester();
     }
diff --git a/tests/Unit/Helpers/SpeedtestHelper/SpeedtestTest.php b/tests/Unit/Helpers/SpeedtestHelper/SpeedtestTest.php
index bb854c5e..9c5db28f 100644
--- a/tests/Unit/Helpers/SpeedtestHelper/SpeedtestTest.php
+++ b/tests/Unit/Helpers/SpeedtestHelper/SpeedtestTest.php
@@ -2,10 +2,10 @@
 
 namespace Tests\Unit\Helpers\SpeedtestHelper;
 
+use App\Exceptions\SpeedtestFailureException;
 use App\Helpers\SpeedtestHelper;
 use App\Utils\OoklaTester;
 use Illuminate\Foundation\Testing\RefreshDatabase;
-use JsonException;
 use Tests\TestCase;
 
 class SpeedtestTest extends TestCase
@@ -58,11 +58,11 @@ class SpeedtestTest extends TestCase
      */
     public function testInvaidJson()
     {
+        $this->expectException(SpeedtestFailureException::class);
+
         $json = '{hi: hi}';
 
         $o = $this->speedtestProvider->run($json);
-
-        $this->assertFalse($o);
     }
 
     /**
@@ -72,10 +72,10 @@ class SpeedtestTest extends TestCase
      */
     public function testIncompleteJson()
     {
+        $this->expectException(SpeedtestFailureException::class);
+
         $json = '{"hi": "hi"}';
 
         $o = $this->speedtestProvider->run($json);
-
-        $this->assertFalse($o);
     }
 }