diff --git a/tests/Storage/MongoTest.php b/tests/Storage/MongoTest.php
index 24b0464..2776e6d 100644
--- a/tests/Storage/MongoTest.php
+++ b/tests/Storage/MongoTest.php
@@ -11,6 +11,14 @@
 class MongoTest extends TestCase
 {
 
+    protected function setUp()
+    {
+        if (!extension_loaded('mongodb')) {
+            $this->markTestSkipped('Mongo extension not installed');
+        }
+        parent::setUp();
+    }
+
     public function testGetOnNullReturnsNull()
     {
         $collection = $this->getMockBuilder(Collection::class)->disableOriginalConstructor()