diff --git a/framework/core/tests/integration/api/authentication/WithApiKeyTest.php b/framework/core/tests/integration/api/authentication/WithApiKeyTest.php
index 2d716560d..4a07c5e42 100644
--- a/framework/core/tests/integration/api/authentication/WithApiKeyTest.php
+++ b/framework/core/tests/integration/api/authentication/WithApiKeyTest.php
@@ -19,7 +19,7 @@ class WithApiKeyTest extends TestCase
 {
     use RetrievesAuthorizedUsers;
 
-    public function setUp()
+    protected function setUp(): void
     {
         parent::setUp();
 
diff --git a/framework/core/tests/integration/api/authentication/WithTokenTest.php b/framework/core/tests/integration/api/authentication/WithTokenTest.php
index 85775bb84..7bab5ec4a 100644
--- a/framework/core/tests/integration/api/authentication/WithTokenTest.php
+++ b/framework/core/tests/integration/api/authentication/WithTokenTest.php
@@ -17,7 +17,7 @@ class WithTokenTest extends TestCase
 {
     use RetrievesAuthorizedUsers;
 
-    public function setUp()
+    protected function setUp(): void
     {
         parent::setUp();
 
diff --git a/framework/core/tests/integration/api/csrf_protection/RequireCsrfTokenTest.php b/framework/core/tests/integration/api/csrf_protection/RequireCsrfTokenTest.php
index 697eb3443..b6540eb66 100644
--- a/framework/core/tests/integration/api/csrf_protection/RequireCsrfTokenTest.php
+++ b/framework/core/tests/integration/api/csrf_protection/RequireCsrfTokenTest.php
@@ -16,7 +16,7 @@ class RequireCsrfTokenTest extends TestCase
 {
     use RetrievesAuthorizedUsers;
 
-    public function setUp()
+    protected function setUp(): void
     {
         parent::setUp();
 
diff --git a/framework/core/tests/integration/api/discussions/CreateTest.php b/framework/core/tests/integration/api/discussions/CreateTest.php
index a711847f1..19d289e5e 100644
--- a/framework/core/tests/integration/api/discussions/CreateTest.php
+++ b/framework/core/tests/integration/api/discussions/CreateTest.php
@@ -18,7 +18,7 @@ class CreateTest extends TestCase
 {
     use RetrievesAuthorizedUsers;
 
-    public function setUp()
+    protected function setUp(): void
     {
         parent::setUp();
 
diff --git a/framework/core/tests/integration/api/discussions/DeletionTest.php b/framework/core/tests/integration/api/discussions/DeletionTest.php
index 31f736240..aa948d046 100644
--- a/framework/core/tests/integration/api/discussions/DeletionTest.php
+++ b/framework/core/tests/integration/api/discussions/DeletionTest.php
@@ -17,7 +17,7 @@ class DeletionTest extends TestCase
 {
     use RetrievesAuthorizedUsers;
 
-    public function setUp()
+    protected function setUp(): void
     {
         parent::setUp();
 
diff --git a/framework/core/tests/integration/api/discussions/ListTest.php b/framework/core/tests/integration/api/discussions/ListTest.php
index 2cb2c0be4..3e56c4150 100644
--- a/framework/core/tests/integration/api/discussions/ListTest.php
+++ b/framework/core/tests/integration/api/discussions/ListTest.php
@@ -17,7 +17,7 @@ class ListTest extends TestCase
 {
     use RetrievesAuthorizedUsers;
 
-    public function setUp()
+    protected function setUp(): void
     {
         parent::setUp();
 
diff --git a/framework/core/tests/integration/api/discussions/ShowTest.php b/framework/core/tests/integration/api/discussions/ShowTest.php
index cb683dce0..df822cd99 100644
--- a/framework/core/tests/integration/api/discussions/ShowTest.php
+++ b/framework/core/tests/integration/api/discussions/ShowTest.php
@@ -20,7 +20,7 @@ class ShowTest extends TestCase
 {
     use RetrievesAuthorizedUsers;
 
-    public function setUp()
+    protected function setUp(): void
     {
         parent::setUp();
 
diff --git a/framework/core/tests/integration/api/groups/CreateTest.php b/framework/core/tests/integration/api/groups/CreateTest.php
index 03fbeda79..360e7f3b3 100644
--- a/framework/core/tests/integration/api/groups/CreateTest.php
+++ b/framework/core/tests/integration/api/groups/CreateTest.php
@@ -18,7 +18,7 @@ class CreateTest extends TestCase
 {
     use RetrievesAuthorizedUsers;
 
-    public function setUp()
+    protected function setUp(): void
     {
         parent::setUp();
 
diff --git a/framework/core/tests/integration/api/notifications/ListTest.php b/framework/core/tests/integration/api/notifications/ListTest.php
index 946885483..a33a756de 100644
--- a/framework/core/tests/integration/api/notifications/ListTest.php
+++ b/framework/core/tests/integration/api/notifications/ListTest.php
@@ -16,7 +16,7 @@ class ListTest extends TestCase
 {
     use RetrievesAuthorizedUsers;
 
-    public function setUp()
+    protected function setUp(): void
     {
         parent::setUp();
 
diff --git a/framework/core/tests/integration/api/posts/CreateTest.php b/framework/core/tests/integration/api/posts/CreateTest.php
index a11f297cd..bad67ba42 100644
--- a/framework/core/tests/integration/api/posts/CreateTest.php
+++ b/framework/core/tests/integration/api/posts/CreateTest.php
@@ -17,7 +17,7 @@ class CreateTest extends TestCase
 {
     use RetrievesAuthorizedUsers;
 
-    public function setUp()
+    protected function setUp(): void
     {
         parent::setUp();
 
diff --git a/framework/core/tests/integration/api/users/CreateTest.php b/framework/core/tests/integration/api/users/CreateTest.php
index 3c35c096d..d92ea868b 100644
--- a/framework/core/tests/integration/api/users/CreateTest.php
+++ b/framework/core/tests/integration/api/users/CreateTest.php
@@ -18,7 +18,7 @@ class CreateTest extends TestCase
 {
     use RetrievesAuthorizedUsers;
 
-    public function setUp()
+    protected function setUp(): void
     {
         parent::setUp();
 
diff --git a/framework/core/tests/integration/api/users/ListTest.php b/framework/core/tests/integration/api/users/ListTest.php
index 627998f12..3e33786b4 100644
--- a/framework/core/tests/integration/api/users/ListTest.php
+++ b/framework/core/tests/integration/api/users/ListTest.php
@@ -17,7 +17,7 @@ class ListTest extends TestCase
 {
     use RetrievesAuthorizedUsers;
 
-    public function setUp()
+    protected function setUp(): void
     {
         parent::setUp();
 
diff --git a/framework/core/tests/integration/api/users/UpdateTest.php b/framework/core/tests/integration/api/users/UpdateTest.php
index 2e9beb6ec..f07229757 100644
--- a/framework/core/tests/integration/api/users/UpdateTest.php
+++ b/framework/core/tests/integration/api/users/UpdateTest.php
@@ -16,7 +16,7 @@ class UpdateTest extends TestCase
 {
     use RetrievesAuthorizedUsers;
 
-    public function setUp()
+    protected function setUp(): void
     {
         parent::setUp();
 
diff --git a/framework/core/tests/unit/Foundation/ErrorHandling/ExceptionHandler/IlluminateValidationExceptionHandlerTest.php b/framework/core/tests/unit/Foundation/ErrorHandling/ExceptionHandler/IlluminateValidationExceptionHandlerTest.php
index d3df2cf0e..0bf6d4441 100644
--- a/framework/core/tests/unit/Foundation/ErrorHandling/ExceptionHandler/IlluminateValidationExceptionHandlerTest.php
+++ b/framework/core/tests/unit/Foundation/ErrorHandling/ExceptionHandler/IlluminateValidationExceptionHandlerTest.php
@@ -20,7 +20,7 @@ class IlluminateValidationExceptionHandlerTest extends TestCase
 {
     private $handler;
 
-    public function setUp()
+    protected function setUp(): void
     {
         $this->handler = new IlluminateValidationExceptionHandler;
     }
diff --git a/framework/core/tests/unit/Foundation/ErrorHandling/ExceptionHandler/ValidationExceptionHandlerTest.php b/framework/core/tests/unit/Foundation/ErrorHandling/ExceptionHandler/ValidationExceptionHandlerTest.php
index 09e2797fd..edb4c0892 100644
--- a/framework/core/tests/unit/Foundation/ErrorHandling/ExceptionHandler/ValidationExceptionHandlerTest.php
+++ b/framework/core/tests/unit/Foundation/ErrorHandling/ExceptionHandler/ValidationExceptionHandlerTest.php
@@ -17,7 +17,7 @@ class ValidationExceptionHandlerTest extends TestCase
 {
     private $handler;
 
-    public function setUp()
+    protected function setUp(): void
     {
         $this->handler = new ValidationExceptionHandler;
     }
diff --git a/framework/core/tests/unit/Settings/DatabaseSettingsRepositoryTest.php b/framework/core/tests/unit/Settings/DatabaseSettingsRepositoryTest.php
index 2fb34c938..56de7ffd8 100644
--- a/framework/core/tests/unit/Settings/DatabaseSettingsRepositoryTest.php
+++ b/framework/core/tests/unit/Settings/DatabaseSettingsRepositoryTest.php
@@ -19,7 +19,7 @@ class DatabaseSettingsRepositoryTest extends TestCase
     private $connection;
     private $repository;
 
-    public function setUp()
+    protected function setUp(): void
     {
         $this->connection = m::mock(ConnectionInterface::class);
         $this->repository = new DatabaseSettingsRepository($this->connection);
diff --git a/framework/core/tests/unit/Settings/MemoryCacheSettingsRepositoryTest.php b/framework/core/tests/unit/Settings/MemoryCacheSettingsRepositoryTest.php
index 761e60558..4011e4d6b 100644
--- a/framework/core/tests/unit/Settings/MemoryCacheSettingsRepositoryTest.php
+++ b/framework/core/tests/unit/Settings/MemoryCacheSettingsRepositoryTest.php
@@ -19,7 +19,7 @@ class MemoryCacheSettingsRepositoryTest extends TestCase
     private $baseRepository;
     private $repository;
 
-    public function setUp()
+    protected function setUp(): void
     {
         $this->baseRepository = m::mock(SettingsRepositoryInterface::class);
         $this->repository = new MemoryCacheSettingsRepository($this->baseRepository);
diff --git a/framework/core/tests/unit/User/AvatarUploaderTest.php b/framework/core/tests/unit/User/AvatarUploaderTest.php
index beb5241df..392bbe70d 100644
--- a/framework/core/tests/unit/User/AvatarUploaderTest.php
+++ b/framework/core/tests/unit/User/AvatarUploaderTest.php
@@ -24,7 +24,7 @@ class AvatarUploaderTest extends TestCase
     private $filesystem;
     private $uploader;
 
-    public function setUp()
+    protected function setUp(): void
     {
         $this->dispatcher = m::mock(Dispatcher::class);
         $this->dispatcher->shouldIgnoreMissing();