diff --git a/composer.json b/composer.json
index c7e1d90..2f2fba7 100644
--- a/composer.json
+++ b/composer.json
@@ -65,6 +65,7 @@
       },
       "phpmd": {
         "url": "http://static.phpmd.org/php/latest/phpmd.phar",
+        "fallback-url": "https://github.com/jakzal/phpmd/releases/download/2.6.0-jakzal-2/phpmd.phar",
         "force-replace": true
       },
       "security-checker": {
diff --git a/src/Factory/ToolFactory.php b/src/Factory/ToolFactory.php
index b61d137..9ebbf16 100644
--- a/src/Factory/ToolFactory.php
+++ b/src/Factory/ToolFactory.php
@@ -24,6 +24,7 @@ public static function createTool($name, $directory, array $parameters)
             'only-dev' => true,
             'force-replace' => false,
             'rename' => false,
+            'fallback-url' => null,
         ];
 
         $parameters = array_merge($defaults, $parameters);
@@ -47,6 +48,10 @@ public static function createTool($name, $directory, array $parameters)
             $tool->setNameToToolKey();
         }
 
+        if (null !== $parameters['fallback-url']) {
+            $tool->setFallbackUrl($parameters['fallback-url']);
+        }
+
         return $tool;
     }
 
diff --git a/src/Model/Tool.php b/src/Model/Tool.php
index d2910d8..664fae7 100644
--- a/src/Model/Tool.php
+++ b/src/Model/Tool.php
@@ -42,12 +42,16 @@ class Tool
      */
     private $rename = false;
 
+    /**
+     * @var string
+     */
+    private $fallbackUrl;
+
     /**
      * @param string $name
      * @param string $filename
      * @param string $url
      * @param string $signUrl
-     *
      * @SuppressWarnings(PHPMD.ExcessiveParameterList)
      */
     public function __construct($name, $filename, $url, $signUrl = null)
@@ -137,4 +141,22 @@ public function renameToConfigKey()
     {
         return $this->rename;
     }
+
+    /**
+     * @param string $url
+     *
+     * @return void
+     */
+    public function setFallbackUrl($url)
+    {
+        $this->fallbackUrl = $url;
+    }
+
+    /**
+     * @return string
+     */
+    public function getFallbackUrl()
+    {
+        return $this->fallbackUrl;
+    }
 }
diff --git a/src/Script/Decision/IsAccessibleDecision.php b/src/Script/Decision/IsAccessibleDecision.php
index dfed98d..268822e 100644
--- a/src/Script/Decision/IsAccessibleDecision.php
+++ b/src/Script/Decision/IsAccessibleDecision.php
@@ -17,7 +17,7 @@ class IsAccessibleDecision extends AbstractDecision
     public function canProceed(Tool $tool)
     {
         if (false === $this->helper->getDownloader()->isAccessible($tool->getUrl())) {
-            return false;
+            return $this->fallbackUrlIsAccessible($tool);
         }
 
         if (empty($tool->getSignUrl())) {
@@ -38,4 +38,16 @@ public function getReason()
     {
         return '<error>At least one given URL are not accessible!</error>';
     }
+
+    /**
+     * @param Tool $tool
+     *
+     * @return bool
+     */
+    private function fallbackUrlIsAccessible(Tool $tool)
+    {
+        $fallbackUrl = $tool->getFallbackUrl();
+
+        return false === empty($fallbackUrl) && true === $this->helper->getDownloader()->isAccessible($fallbackUrl);
+    }
 }
diff --git a/src/Script/Processor.php b/src/Script/Processor.php
index 95a7ddc..18d48cd 100644
--- a/src/Script/Processor.php
+++ b/src/Script/Processor.php
@@ -9,7 +9,6 @@
 use Tooly\Script\Decision\IsAccessibleDecision;
 use Tooly\Script\Decision\IsVerifiedDecision;
 use Tooly\Script\Decision\OnlyDevDecision;
-use Tooly\Script\Helper;
 use Tooly\Model\Tool;
 
 /**
@@ -80,7 +79,7 @@ public function process(Tool $tool)
             return;
         }
 
-        $data = $this->helper->getDownloader()->download($tool->getUrl());
+        $data = $this->helper->getDownloader()->download($this->getDownloadUrl($tool));
         $filename = $tool->getFilename();
 
         $this->helper->getFilesystem()->createFile($filename, $data);
@@ -166,4 +165,18 @@ private function removeFromDir($dir, array $excludeToolNames = [])
             $this->helper->getFilesystem()->remove($path);
         }
     }
+
+    /**
+     * @param Tool $tool
+     *
+     * @return string
+     */
+    private function getDownloadUrl(Tool $tool)
+    {
+        if (false === $this->helper->getDownloader()->isAccessible($tool->getUrl())) {
+            return $tool->getFallbackUrl();
+        }
+
+        return $tool->getUrl();
+    }
 }
diff --git a/tests/Factory/ToolFactoryTest.php b/tests/Factory/ToolFactoryTest.php
index 1baf06f..79ceca4 100644
--- a/tests/Factory/ToolFactoryTest.php
+++ b/tests/Factory/ToolFactoryTest.php
@@ -18,14 +18,19 @@ public function testCanCreateATool()
         $tool = ToolFactory::createTool('test', 'vfs://root', [
             'url' => 'my-url',
             'sign-url' => 'my-sign-url',
-            'force-replace' => true
+            'force-replace' => true,
+            'only-dev' => false,
+            'rename' => true,
+            'fallback-url' => 'fallback-url'
         ]);
 
         $this->assertInstanceOf(Tool::class, $tool);
         $this->assertEquals('my-url', $tool->getUrl());
         $this->assertEquals('my-sign-url', $tool->getSignUrl());
         $this->assertTrue($tool->forceReplace());
-        $this->assertTrue($tool->isOnlyDev());
+        $this->assertFalse($tool->isOnlyDev());
+        $this->assertTrue($tool->renameToConfigKey());
+        $this->assertEquals('fallback-url', $tool->getFallbackUrl());
     }
 
     public function testCanCreateMultipleTools()
diff --git a/tests/Script/Decision/IsAccessibleDecisionTest.php b/tests/Script/Decision/IsAccessibleDecisionTest.php
index 2f34d6b..0e99cf0 100644
--- a/tests/Script/Decision/IsAccessibleDecisionTest.php
+++ b/tests/Script/Decision/IsAccessibleDecisionTest.php
@@ -74,6 +74,28 @@ public function testNotAccessibleToolSignUrlReturnsFalse()
         ])));
     }
 
+    public function testNotAccessibleToolUrlButAccessibleFallbackUrlReturnsTrue()
+    {
+        $downloader = $this
+            ->getMockBuilder(Downloader::class)
+            ->getMock();
+
+        $downloader
+            ->expects($this->exactly(2))
+            ->method('isAccessible')
+            ->will($this->onConsecutiveCalls(false, true));
+
+        $this->helper
+            ->expects($this->exactly(2))
+            ->method('getDownloader')
+            ->willReturn($downloader);
+
+        $decision = new IsAccessibleDecision($this->configuration, $this->helper);
+        $this->assertTrue($decision->canProceed(ToolFactory::createTool('tool', __DIR__, [
+            'fallback-url' => 'fallback-url'
+        ])));
+    }
+
     public function testAccessibleUrlsWillReturnTrue()
     {
         $downloader = $this
diff --git a/tests/Script/Processor/ProcessTest.php b/tests/Script/Processor/ProcessTest.php
index 9f96469..1d09996 100644
--- a/tests/Script/Processor/ProcessTest.php
+++ b/tests/Script/Processor/ProcessTest.php
@@ -121,4 +121,56 @@ public function testCanSuccessfullyDownloadATool()
         $processor = new Processor($this->io, $this->helper, $this->configuration);
         $processor->process($tool);
     }
+
+    public function testCanSuccessfullyDownloadAToolViaFallbackUrl()
+    {
+        vfsStream::setup('bin');
+
+        $downloader = $this
+            ->getMockBuilder(Downloader::class)
+            ->getMock();
+
+        $downloader
+            ->expects($this->exactly(3))
+            ->method('isAccessible')
+            ->will($this->onConsecutiveCalls(false, true, false));
+
+        $filesystem = $this
+            ->getMockBuilder(Filesystem::class)
+            ->getMock();
+
+        $filesystem
+            ->method('isFileAlreadyExist')
+            ->willReturn(false);
+
+        $this->helper
+            ->method('getFilesystem')
+            ->willReturn($filesystem);
+
+        $this->helper
+            ->expects($this->exactly(4))
+            ->method('getDownloader')
+            ->willReturn($downloader);
+
+        $this->helper
+            ->method('isFileAlreadyExist')
+            ->willReturn(false);
+
+        $this->io
+            ->expects($this->exactly(2))
+            ->method('write');
+
+        $tool = $this
+            ->getMockBuilder(Tool::class)
+            ->disableOriginalConstructor()
+            ->getMock();
+
+        $tool
+            ->expects($this->exactly(2))
+            ->method('getFallbackUrl')
+            ->willReturn('//test.html');
+
+        $processor = new Processor($this->io, $this->helper, $this->configuration);
+        $processor->process($tool);
+    }
 }