diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index d844ab0dd..29e0f5379 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        php: [8.2, 8.3]
+        php: [8.2, 8.3, 8.4]
         laravel: [11]
 
     name: PHP ${{ matrix.php }} - Laravel ${{ matrix.laravel }}
@@ -40,7 +40,7 @@ jobs:
           composer update --prefer-dist --no-interaction --no-progress
 
       - name: Execute tests
-        run: vendor/bin/phpunit
+        run: vendor/bin/phpunit --display-deprecations --fail-on-deprecation
 
   stub-tests:
     runs-on: ubuntu-22.04
@@ -49,7 +49,7 @@ jobs:
       fail-fast: true
       matrix:
         stack: [inertia, livewire]
-        laravel: [11]
+        laravel: ['11.x-dev']
 
     name: Test Stubs - Laravel ${{ matrix.laravel }} - ${{ matrix.stack }}
 
diff --git a/.styleci.yml b/.styleci.yml
index 7e08ec6e9..be08587af 100644
--- a/.styleci.yml
+++ b/.styleci.yml
@@ -1,5 +1,7 @@
 php:
   preset: laravel
+  enabled:
+    - nullable_type_declarations
   disabled:
     - no_unused_imports
 js:
diff --git a/composer.json b/composer.json
index a3f08672a..7e92328e2 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
         "illuminate/console": "^11.0",
         "illuminate/support": "^11.0",
         "laravel/fortify": "^1.20",
-        "mobiledetect/mobiledetectlib": "^4.8",
+        "mobiledetect/mobiledetectlib": "^4.8.08",
         "symfony/console": "^7.0"
     },
     "require-dev": {