diff --git a/.env.testing b/.env.testing
index b8810212..7bf00018 100644
--- a/.env.testing
+++ b/.env.testing
@@ -1,19 +1,19 @@
 APP_DEBUG=false
 APP_ENV=testing
 
-DB_CONNECTION=mysql
+DB_CONNECTION=sqlite
 DB_HOST=127.0.0.1
 DB_PORT=3306
-DB_DATABASE=test
+DB_DATABASE=:memory:
 DB_USERNAME=root
 DB_PASSWORD=root
 DB_PREFIX=
 
 PWD_METHOD=BCRYPT
-SALT=c67709dd8b7b733aca0d570681fe96cf
+BCRYPT_ROUNDS=4
 APP_KEY=base64:eVX/xzF5NhpGB2luswliFx9XSBsbbAP21wOi68X/P34=
 
-MAIL_MAILER=smtp
+MAIL_MAILER=array
 MAIL_HOST=localhost
 MAIL_PORT=465
 MAIL_USERNAME=
diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 6cf2b03a..b396588a 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -57,17 +57,13 @@ jobs:
         restore-keys: ${{ runner.os }}-composer-
     - name: Install Composer dependencies
       run: composer install --no-progress --no-suggest --prefer-dist --optimize-autoloader
-    - name: Prepare application
-      run: |
-        cp .env.example .env
-        php artisan key:generate
     - name: Run tests only
       if: matrix.php != '7.2'
-      run: ./scripts/phpunit.ps1
+      run: ./vendor/bin/phpunit
       shell: pwsh
     - name: Run tests with coverage report
       if: matrix.php == '7.2'
-      run: ./scripts/phpunit.ps1 -Coverage
+      run: ./vendor/bin/phpunit --coverage-clover=coverage.xml
       shell: pwsh
     - name: Upload coverage report
       uses: codecov/codecov-action@v1
diff --git a/phpunit.xml b/phpunit.xml
index 7bd16ba4..dde9176b 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -1,8 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit colors="true"
-         backupGlobals="false"
-         stopOnFailure="false"
-         processIsolation="false"
          backupStaticAttributes="false"
          convertErrorsToExceptions="true"
          convertNoticesToExceptions="true"
diff --git a/scripts/phpunit.ps1 b/scripts/phpunit.ps1
deleted file mode 100644
index 6659a548..00000000
--- a/scripts/phpunit.ps1
+++ /dev/null
@@ -1,36 +0,0 @@
-param (
-    [Parameter(Position = 0)]
-    [string]
-    $Filter,
-
-    [Parameter()]
-    [switch]
-    $Bail,
-
-    # For CI only
-    [Parameter()]
-    [switch]
-    $Coverage
-)
-
-$dbPath = [System.IO.Path]::GetTempPath() + 'bs.db'
-$env:DB_CONNECTION = 'sqlite'
-$env:DB_DATABASE = $dbPath
-
-if (Test-Path $dbPath) {
-    Remove-Item $dbPath
-}
-New-Item $dbPath | Out-Null
-
-$arguments = ''
-if ($Filter) {
-    $arguments += " --filter=$Filter"
-}
-if ($Bail) {
-    $arguments += ' --stop-on-failure'
-}
-if ($Coverage) {
-    $arguments += ' --coverage-clover=coverage.xml'
-}
-
-./vendor/bin/phpunit $arguments