diff --git a/tests/PHPCurlClass/PHPCurlClassTest.php b/tests/PHPCurlClass/PHPCurlClassTest.php
index e15a86f..5055751 100644
--- a/tests/PHPCurlClass/PHPCurlClassTest.php
+++ b/tests/PHPCurlClass/PHPCurlClassTest.php
@@ -534,6 +534,12 @@ class CurlTest extends PHPUnit_Framework_TestCase
 
     public function testDigestHttpAuth()
     {
+        // Skip Digest Access Authentication test on HHVM.
+        // https://github.com/facebook/hhvm/issues/5201
+        if (defined('HHVM_VERSION')) {
+            return;
+        }
+
         $username = 'myusername';
         $password = 'mypassword';
         $invalid_password = 'anotherpassword';