diff --git a/.travis.yml b/.travis.yml
index 22600fb..d8d4e6e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,9 +2,9 @@ sudo: required
 dist: trusty
 language: php
 php:
-    - 7.1
     - 7.2
     - 7.3
+    - 7.4snapshot
 env:
     global:
         - CORE_BRANCH=master
@@ -16,13 +16,13 @@ matrix:
     allow_failures:
         - env: DB=sqlite;CODECHECK=2
     include:
-        - php: 7.1
+        - php: 7.3
           env: DB=mysql
-        - php: 7.1
+        - php: 7.3
           env: DB=pgsql
-        - php: 7.1
+        - php: 7.3
           env: DB=sqlite;CODECHECK=1
-        - php: 7.1
+        - php: 7.3
           env: DB=sqlite;CODECHECK=2
     fast_finish: true
 
diff --git a/tests/Unit/ClientTest.php b/tests/Unit/ClientTest.php
index f1b976d..2c8276d 100644
--- a/tests/Unit/ClientTest.php
+++ b/tests/Unit/ClientTest.php
@@ -45,7 +45,7 @@ class SharePointClientTest extends TestCase {
 	/** @var  Client */
 	protected $client;
 
-	public function setUp() {
+	protected function setUp(): void {
 		parent::setUp();
 
 		$this->contextsFactory = $this->createMock(ContextsFactory::class);
diff --git a/tests/Unit/StorageTest.php b/tests/Unit/StorageTest.php
index 8c0152a..492987c 100644
--- a/tests/Unit/StorageTest.php
+++ b/tests/Unit/StorageTest.php
@@ -71,7 +71,7 @@ class SharePointTest extends TestCase {
 	/** @var  CappedMemoryCache|\PHPUnit_Framework_MockObject_MockObject */
 	protected $fileCache;
 
-	public function setUp() {
+	protected function setUp(): void {
 		parent::setUp();
 
 		$this->factory = $this->createMock(ContextsFactory::class);