diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 01066db8..07eb4deb 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
      matrix:
        laravel: [
-        # "^6.0",
+        "^6.0",
         "^7.0"
        ]
     
diff --git a/src/Database/Models/Domain.php b/src/Database/Models/Domain.php
index ad3a2013..7acc1c0a 100644
--- a/src/Database/Models/Domain.php
+++ b/src/Database/Models/Domain.php
@@ -21,8 +21,10 @@ class Domain extends Model implements Contracts\Domain
 
     protected $guarded = [];
 
-    public static function booted()
+    public static function boot()
     {
+        parent::boot();
+
         $ensureDomainIsNotOccupied = function (Domain $self) {
             if ($domain = Domain::where('domain', $self->domain)->first()) {
                 if ($domain->getKey() !== $self->getKey()) {
diff --git a/src/Database/Models/TenantPivot.php b/src/Database/Models/TenantPivot.php
index b28c03fa..6fc08756 100644
--- a/src/Database/Models/TenantPivot.php
+++ b/src/Database/Models/TenantPivot.php
@@ -7,8 +7,10 @@ use Stancl\Tenancy\Contracts\Syncable;
 
 class TenantPivot extends Pivot
 {
-    public static function booted()
+    public static function boot()
     {
+        parent::boot();
+
         static::saved(function (self $pivot) {
             $parent = $pivot->pivotParent;
 
diff --git a/src/Middleware/CheckTenantForMaintenanceMode.php b/src/Middleware/CheckTenantForMaintenanceMode.php
index 1fccdc9d..4e0e4828 100644
--- a/src/Middleware/CheckTenantForMaintenanceMode.php
+++ b/src/Middleware/CheckTenantForMaintenanceMode.php
@@ -11,7 +11,7 @@ use Symfony\Component\HttpFoundation\IpUtils;
 
 class CheckTenantForMaintenanceMode extends CheckForMaintenanceMode
 {
-    public function handle(Request $request, Closure $next)
+    public function handle($request, Closure $next)
     {
         if (! tenant()) {
             throw new TenancyNotInitializedException;
diff --git a/tests/ScopeSessionsTest.php b/tests/ScopeSessionsTest.php
index 25bcc2eb..72559ad0 100644
--- a/tests/ScopeSessionsTest.php
+++ b/tests/ScopeSessionsTest.php
@@ -21,7 +21,7 @@ class ScopeSessionsTest extends TestCase
             'middleware' => [StartSession::class, InitializeTenancyBySubdomain::class, ScopeSessions::class],
         ], function () {
             Route::get('/foo', function () {
-                return true;
+                return 'true';
             });
         });