diff --git a/.travis.yml b/.travis.yml
index 66653e7..5e046cc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,7 +10,6 @@ php:
 
 matrix:
   allow_failures:
-    - php: hhvm
     - php: nightly
 
 before_script:
diff --git a/tests/PHPCurlClass/PHPMultiCurlClassTest.php b/tests/PHPCurlClass/PHPMultiCurlClassTest.php
index af4fc85..8de9ccb 100644
--- a/tests/PHPCurlClass/PHPMultiCurlClassTest.php
+++ b/tests/PHPCurlClass/PHPMultiCurlClassTest.php
@@ -1614,6 +1614,12 @@ class MultiCurlTest extends PHPUnit_Framework_TestCase
 
     public function testDigestHttpAuthSuccess()
     {
+        // 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';
diff --git a/tests/before_script.sh b/tests/before_script.sh
index 4955d7c..c5fc1a7 100755
--- a/tests/before_script.sh
+++ b/tests/before_script.sh
@@ -46,4 +46,6 @@ server {
 }
 EOF
     sudo /usr/share/hhvm/install_fastcgi.sh
+    sudo /etc/init.d/hhvm restart
+    sudo service nginx restart
 fi