diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f0418e6..dc04843 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,15 +15,19 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        php: [ '7.2', '7.3', '7.4', '8.0', '8.1', '8.2' ]
+        php: [ '7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3' ]
         symfony: ['symfony3', 'symfony4', 'symfony5']
         include:
-          - php: '8.0'
-            symfony: 'symfony6'
           - php: '8.1'
             symfony: 'symfony6'
           - php: '8.2'
             symfony: 'symfony6'
+          - php: '8.3'
+            symfony: 'symfony6'
+          - php: '8.2'
+            symfony: 'symfony7'
+          - php: '8.3'
+            symfony: 'symfony7'
       fail-fast: false
     env:
       MATRIX_PHP: ${{ matrix.php }}
diff --git a/LICENSE b/LICENSE
index 88dec74..605fe43 100644
--- a/LICENSE
+++ b/LICENSE
@@ -37,19 +37,19 @@ symfony/config                     v3.4.47 MIT
 symfony/console                    v4.4.49 MIT
 symfony/css-selector               v7.0.3  MIT
 symfony/dependency-injection       v3.4.47 MIT
-symfony/deprecation-contracts      v2.5.2  MIT
+symfony/deprecation-contracts      v2.5.3  MIT
 symfony/dom-crawler                v5.4.35 MIT
 symfony/event-dispatcher           v4.4.44 MIT
 symfony/event-dispatcher-contracts v1.10.0 MIT
 symfony/filesystem                 v4.4.42 MIT
-symfony/http-client                v5.4.37 MIT
-symfony/http-client-contracts      v2.5.2  MIT
+symfony/http-client                v5.4.38 MIT
+symfony/http-client-contracts      v2.5.3  MIT
 symfony/panther                    v1.1.1  MIT
 symfony/polyfill-ctype             v1.29.0 MIT
 symfony/polyfill-mbstring          v1.29.0 MIT
 symfony/polyfill-php80             v1.29.0 MIT
 symfony/process                    v5.4.36 MIT
-symfony/service-contracts          v2.5.2  MIT
+symfony/service-contracts          v2.5.3  MIT
 symfony/translation                v4.4.47 MIT
-symfony/translation-contracts      v2.5.2  MIT
+symfony/translation-contracts      v2.5.3  MIT
 symfony/yaml                       v5.3.14 MIT
\ No newline at end of file
diff --git a/README.md b/README.md
index 543df0b..b3ea23e 100644
--- a/README.md
+++ b/README.md
@@ -198,14 +198,49 @@ private function spin(\Closure $closure, ?int $tries = 25): ?NodeElement
 
 ## How to contribute?
 
-Start docker-compose with php version of your choice. At the moment the following php versions can be used with docker-compose: php7.2, php7.3, php7.4, php8.0, php8.1 and php8.2.
+Start docker-compose with php version of your choice. At the moment the following php versions can be used with docker-compose: `php7.2`, `php7.3`, `php7.4`, `php8.0`, `php8.1`, `php8.2` and `php8.3`.
+
+E.g. you can start a container like this:
 
     docker-compose up php8.2
 
-Run phpunit tests
+Upgrade scenario lock files:
+
+    docker-compose run php8.2 composer update
+
+Run phpunit tests:
 
     docker-compose run php8.2 vendor/bin/phpunit
 
+If you want to start up all containers at once and keep them running in background then run the following:
+```
+docker-compose up -d php7.2
+docker-compose up -d php7.3
+docker-compose up -d php7.4
+docker-compose up -d php8.0
+docker-compose up -d php8.1
+docker-compose up -d php8.2
+docker-compose up -d php8.3
+```
+
+If you want to execute tests for scenario `symfony6` and `php8.2` then run the following:
+```
+docker-compose run php8.2 composer scenario symfony6
+docker-compose run php8.2 vendor/bin/bdi detect drivers
+docker-compose run php8.2 vendor/bin/behat --config=tests/Behat/behat.yml
+docker-compose run php8.2 vendor/bin/phpunit
+```
+
+Or if you want to execute tests for scenario `symfony7` and `php8.3` then run the following:
+```
+docker-compose run php8.3 composer scenario symfony7
+docker-compose run php8.3 vendor/bin/bdi detect drivers
+docker-compose run php8.3 vendor/bin/behat --config=tests/Behat/behat.yml
+docker-compose run php8.3 vendor/bin/phpunit
+```
+
+See also https://github.com/g1a/composer-test-scenarios for more information about scenarios.
+
 ## Credits
 
 Created by Robert Freigang [robertfausk](https://github.com/robertfausk).
diff --git a/tests/Behat/behat.yml b/tests/Behat/behat.yml
index a84972a..00aef17 100644
--- a/tests/Behat/behat.yml
+++ b/tests/Behat/behat.yml
@@ -6,10 +6,11 @@ default:
             contexts:
                 - Behat\MinkExtension\Context\MinkContext
     extensions:
-        Robertfausk\Behat\PantherExtension: ~ # no configuration here
+        Robertfausk\Behat\PantherExtension: ~
         Behat\MinkExtension:
             browser_name:       chrome
             javascript_session: javascript_chrome
+            base_url: "" # needed cause of php8.2 with error "rtrim(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/vendor/friends-of-behat/mink-extension/src/Behat/MinkExtension/Context/RawMinkContext.php line 144"
             sessions:
                 default:
                     panther:
diff --git a/tests/Behat/features/simple.feature b/tests/Behat/features/simple.feature
index 60c0095..322f901 100644
--- a/tests/Behat/features/simple.feature
+++ b/tests/Behat/features/simple.feature
@@ -1,6 +1,6 @@
 Feature: Just a simple call to a php script
 
-  @javascript_chrome
+  @javascript
   Scenario: I am on a php and see the echo response
     And I am on "index.php"
     Then I should see "Huhuuu!"