diff --git a/composer.json b/composer.json
index 379b42d..fa12807 100644
--- a/composer.json
+++ b/composer.json
@@ -17,13 +17,14 @@
     ],
     "require": {
         "php": "^7.2",
-        "laravel/nova": "*",
+        "laravel/nova": "^2.0",
+        "illuminate/support": "^5.8",
         "spatie/laravel-backup": "^6.0"
     },
     "require-dev": {
-        "orchestra/testbench": "^3.6",
-        "phpunit/phpunit": "7.1",
-        "spatie/phpunit-snapshot-assertions": "^1.3"
+        "orchestra/testbench": "^3.8",
+        "phpunit/phpunit": "8.0",
+        "spatie/phpunit-snapshot-assertions": "^2.0"
     },
     "repositories": [
         {
diff --git a/tests/Controllers/BackupsControllerTest.php b/tests/Controllers/BackupsControllerTest.php
index ff3c8e4..92b222a 100644
--- a/tests/Controllers/BackupsControllerTest.php
+++ b/tests/Controllers/BackupsControllerTest.php
@@ -9,7 +9,7 @@
 
 class BackupsControllerTest extends TestCase
 {
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
 
diff --git a/tests/Controllers/CleanBackupsControllerTest.php b/tests/Controllers/CleanBackupsControllerTest.php
index 90824ac..5c01978 100644
--- a/tests/Controllers/CleanBackupsControllerTest.php
+++ b/tests/Controllers/CleanBackupsControllerTest.php
@@ -7,7 +7,7 @@
 
 class CleanBackupsControllerTest extends TestCase
 {
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
 
diff --git a/tests/Controllers/DownloadBackupControllerTest.php b/tests/Controllers/DownloadBackupControllerTest.php
index 27d36a5..37f7483 100644
--- a/tests/Controllers/DownloadBackupControllerTest.php
+++ b/tests/Controllers/DownloadBackupControllerTest.php
@@ -8,7 +8,7 @@
 
 class DownloadBackupControllerTest extends TestCase
 {
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
 
diff --git a/tests/TestCase.php b/tests/TestCase.php
index 634f49a..ba45702 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -14,7 +14,7 @@ abstract class TestCase extends Orchestra
     /** @var \Illuminate\Filesystem\Filesystem */
     protected $filesystem;
 
-    public function setUp()
+    public function setUp(): void
     {
         $this->filesystem = new Filesystem();