diff --git a/phpunit b/phpunit
index 6830e3a77a..0b8e2e3d3c 100755
--- a/phpunit
+++ b/phpunit
@@ -49,6 +49,7 @@ if (!file_exists("$PHPUNIT_DIR/phpunit-$PHPUNIT_VERSION/phpunit") || md5_file(__
     $zip->close();
     chdir("phpunit-$PHPUNIT_VERSION");
     passthru("$COMPOSER remove --no-update symfony/yaml");
+    passthru("$COMPOSER require --no-update phpunit/phpunit-mock-objects \"<=3.0.0\"");
     passthru("$COMPOSER require --dev --no-update symfony/phpunit-bridge \">=2.8@dev\"");
     passthru("$COMPOSER install --prefer-source --no-progress --ansi");
     file_put_contents('phpunit', <<<EOPHP