diff --git a/.travis.yml b/.travis.yml
index 6bf0e22..588eb91 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,13 +9,13 @@ env:
 
 before_script:
  - phpenv rehash
+ - echo 'memory_limit = 2048M' >> ~/.phpenv/versions/$(phpenv version-name)/etc/conf.d/travis.ini
  - composer self-update
- - git clone git://github.com/silverstripe/silverstripe-travis-support.git ~/travis-support
- - php ~/travis-support/travis_setup.php --source `pwd` --target ~/builds/ss
- - cd ~/builds/ss
+ - composer validate
+ - composer install --prefer-dist --no-interaction --no-progress --no-suggest --optimize-autoloader --verbose --profile
 
 script:
- - vendor/bin/phpunit --coverage-clover=coverage.xml psr7-adapters/tests
+ - vendor/bin/phpunit --coverage-clover=coverage.xml ./tests
 
 after_success:
   - mv coverage.xml ~/build/$TRAVIS_REPO_SLUG
diff --git a/composer.json b/composer.json
index eb12969..2e793eb 100644
--- a/composer.json
+++ b/composer.json
@@ -1,9 +1,10 @@
 {
     "name": "robbie/psr7-adapters",
     "description": "PSR-7 compliant adapters for SilverStripe HTTP classes",
-    "type": "silverstripe-module",
+    "type": "silverstripe-vendormodule",
     "require": {
-        "silverstripe/framework": "^4.0@dev",
+        "php": ">=5.6.0",
+        "silverstripe/framework": "^4.0",
         "guzzlehttp/psr7": "^1.3"
     },
     "license": "BSD-3-Clause",
@@ -26,5 +27,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^5.7"
-    }
+    },
+    "minimum-stability": "dev",
+    "prefer-stable": true
 }
diff --git a/tests/HttpRequestAdapterTest.php b/tests/HttpRequestAdapterTest.php
index 6a5f879..10760d9 100644
--- a/tests/HttpRequestAdapterTest.php
+++ b/tests/HttpRequestAdapterTest.php
@@ -79,6 +79,9 @@ public function testGetHttpRequestFromPsr7Interface()
      */
     protected function getInterface($method, $uri, $get = [], $post = [], $body = null)
     {
+        // set server protocol as AbstractHttpAdapter relies on it
+        $_SERVER['SERVER_PROTOCOL'] = 'HTTP/1.1';
+
         $httpRequest = new HTTPRequest($method, $uri, $get, $post, $body);
         $adapter = new HttpRequestAdapter;
         $adapter->setServerVars($this->mockRequestData());