diff --git a/.travis.yml b/.travis.yml
index d467147..440045b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,25 +1,29 @@
 language: php
 
-sudo: false
+matrix:
+  include:
+    - php: hhvm-3.18
+      dist: trusty
+    - php: 5.3
+      dist: precise
+    - php: 5.4
+      dist: trusty
+    - php: 5.5
+      dist: trusty
+    - php: 5.6
+      dist: xenial
+    - php: 7.0
+      dist: xenial
+    - php: 7.1
+      dist: bionic
+    - php: 7.2
+      dist: bionic
+    - php: 7.3
+      dist: bionic
+    - php: 7.4
+      dist: bionic
 
-cache:
-  directories:
-    - $HOME/.composer/
-
-# Run tests against all these PHP versions
-# TODO: When it becomes possible in TravisCI, switch 7.4snapshot to plain 7.4
-php:
-  - 5.4
-  - 5.5
-  - 5.6
-  - 7.0
-  - 7.1
-  - 7.2
-  - 7.3
-  - 7.4snapshot
-  - hhvm
-
-before_script:
+install:
   - composer install --prefer-dist
 
 script:
diff --git a/test/helpers/MarkdownTestHelper.php b/test/helpers/MarkdownTestHelper.php
index 545dabd..ffca0c9 100644
--- a/test/helpers/MarkdownTestHelper.php
+++ b/test/helpers/MarkdownTestHelper.php
@@ -20,7 +20,7 @@ class MarkdownTestHelper
 			RecursiveRegexIterator::GET_MATCH
 		);
 
-		$dataValues = [];
+		$dataValues = array();
 
 		/** @var SplFileInfo $inputFile */
 		foreach ($regexIterator as $inputFiles) {
@@ -31,7 +31,7 @@ class MarkdownTestHelper
 					$expectedHtmlPath = substr($inputMarkdownPath, 0, -4) . 'html';
 					$xhtml = false;
 				}
-				$dataValues[] = [$inputMarkdownPath, $expectedHtmlPath, $xhtml];
+				$dataValues[] = array($inputMarkdownPath, $expectedHtmlPath, $xhtml);
 			}
 		}