diff --git a/.travis.yml b/.travis.yml
index a05852c3..8df5ea0d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,8 @@
 language: php
 php:
-  - 7.1
   - 7.2
   - 7.3
+  - 7.4snapshot
 
 services:
   - mysql
@@ -57,13 +57,13 @@ script:
 
 matrix:
   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=mysql;CODECHECK=1
-    - php: 7.1
+    - php: 7.3
       env: DB=mysql;CODECHECK=2
   allow_failures:
     - env: DB=mysql;CODECHECK=2
diff --git a/tests/lib/PasswordPolicyConfigTest.php b/tests/lib/PasswordPolicyConfigTest.php
index 5d6c1d9c..fd71aadd 100644
--- a/tests/lib/PasswordPolicyConfigTest.php
+++ b/tests/lib/PasswordPolicyConfigTest.php
@@ -33,7 +33,7 @@ class PasswordPolicyConfigTest extends TestCase {
 	/** @var  PasswordPolicyConfig */
 	private $instance;
 
-	public function setUp() {
+	protected function setUp(): void {
 		parent::setUp();
 
 		$this->config = $this->createMock(IConfig::class);
diff --git a/tests/lib/PasswordValidatorTest.php b/tests/lib/PasswordValidatorTest.php
index 457212c2..fa85d10e 100644
--- a/tests/lib/PasswordValidatorTest.php
+++ b/tests/lib/PasswordValidatorTest.php
@@ -51,7 +51,7 @@ class PasswordValidatorTest extends TestCase {
 	private $validator;
 
 
-	public function setUp() {
+	protected function setUp(): void {
 		parent::setUp();
 
 		$this->container = $this->createMock(IAppContainer::class);
diff --git a/tests/lib/Validator/CommonPasswordsValidatorTest.php b/tests/lib/Validator/CommonPasswordsValidatorTest.php
index 68b15143..6d770412 100644
--- a/tests/lib/Validator/CommonPasswordsValidatorTest.php
+++ b/tests/lib/Validator/CommonPasswordsValidatorTest.php
@@ -43,7 +43,7 @@ class CommonPasswordsValidatorTest extends TestCase {
 	/** @var IValidator */
 	private $validator;
 
-	public function setUp() {
+	protected function setUp(): void {
 		parent::setUp();
 
 		$this->confg = $this->createMock(PasswordPolicyConfig::class);
diff --git a/tests/lib/Validator/LengthValidatorTest.php b/tests/lib/Validator/LengthValidatorTest.php
index 02d08c63..7239c953 100644
--- a/tests/lib/Validator/LengthValidatorTest.php
+++ b/tests/lib/Validator/LengthValidatorTest.php
@@ -43,7 +43,7 @@ class LengthValidatorTest extends TestCase {
 	/** @var IValidator */
 	private $validator;
 
-	public function setUp() {
+	protected function setUp(): void {
 		parent::setUp();
 
 		$this->confg = $this->createMock(PasswordPolicyConfig::class);
diff --git a/tests/lib/Validator/NumericCharacterValidatorTest.php b/tests/lib/Validator/NumericCharacterValidatorTest.php
index 94634d5d..2e1f8935 100644
--- a/tests/lib/Validator/NumericCharacterValidatorTest.php
+++ b/tests/lib/Validator/NumericCharacterValidatorTest.php
@@ -43,7 +43,7 @@ class NumericCharacterValidatorTest extends TestCase {
 	/** @var IValidator */
 	private $validator;
 
-	public function setUp() {
+	protected function setUp(): void {
 		parent::setUp();
 
 		$this->confg = $this->createMock(PasswordPolicyConfig::class);
diff --git a/tests/lib/Validator/SpecialCharactersValidatorTest.php b/tests/lib/Validator/SpecialCharactersValidatorTest.php
index 27e8d17c..5393fc21 100644
--- a/tests/lib/Validator/SpecialCharactersValidatorTest.php
+++ b/tests/lib/Validator/SpecialCharactersValidatorTest.php
@@ -43,7 +43,7 @@ class SpecialCharactersValidatorTest extends TestCase {
 	/** @var IValidator */
 	private $validator;
 
-	public function setUp() {
+	protected function setUp(): void {
 		parent::setUp();
 
 		$this->confg = $this->createMock(PasswordPolicyConfig::class);
diff --git a/tests/lib/Validator/UpperCaseLowerCaseValidatorTest.php b/tests/lib/Validator/UpperCaseLowerCaseValidatorTest.php
index 0999c923..1ff9bb63 100644
--- a/tests/lib/Validator/UpperCaseLowerCaseValidatorTest.php
+++ b/tests/lib/Validator/UpperCaseLowerCaseValidatorTest.php
@@ -43,7 +43,7 @@ class UpperCaseLowerCaseValidatorTest extends TestCase {
 	/** @var IValidator */
 	private $validator;
 
-	public function setUp() {
+	protected function setUp(): void {
 		parent::setUp();
 
 		$this->confg = $this->createMock(PasswordPolicyConfig::class);