diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index b5c8f20..271c396 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -16,9 +16,8 @@ jobs:
             fail-fast: false
             matrix:
                 include:
-                    - { php-version: 7.4, symfony-locked-version: none, dependency-version: prefer-lowest }
-                    - { php-version: 7.4, symfony-locked-version: none, dependency-version: prefer-stable }
-                    - { php-version: 8.1, symfony-locked-version: none, dependency-version: prefer-stable }
+                    - { php-version: 8.1, symfony-locked-version: 5.4.*, dependency-version: prefer-stable }
+                    - { php-version: 8.1, symfony-locked-version: 6.4.*, dependency-version: prefer-stable }
         name: PHPUnit (PHP ${{matrix.php-version}}, Symfony Version Lock ${{ matrix.symfony-locked-version }}, ${{ matrix.dependency-version }})
         steps:
             -   uses: actions/checkout@v4
diff --git a/composer.json b/composer.json
index 480a82c..5878c0a 100644
--- a/composer.json
+++ b/composer.json
@@ -20,17 +20,17 @@
         }
     ],
     "require": {
-        "php": "^7.4 | 8.0.* | 8.1.*",
+        "php": "8.1.*",
         "ext-intl": "*",
         "lib-icu": ">=4.8",
         "jms/parser-lib": "^1.0.0",
         "psr/log": "^1.0",
-        "symfony/config": "^4.3|^5.0",
-        "symfony/dependency-injection": "^4.4|^5.0",
-        "symfony/finder": "^3.4.31|^4.0|^5.0",
-        "symfony/framework-bundle": "^4.4|^5.0",
-        "symfony/http-kernel": "^4.4|^5.0",
-        "symfony/translation": "^4.2|^5.0",
+        "symfony/config": "^5.0|^6.0",
+        "symfony/dependency-injection": "^5.0|^6.0",
+        "symfony/finder": "^5.0|^6.0",
+        "symfony/framework-bundle": "^5.0|^6.0",
+        "symfony/http-kernel": "^5.0|^6.0",
+        "symfony/translation": "^5.0|^6.0",
         "symfony/translation-contracts": "^2.0|^3.0",
         "twig/twig": "^1.42|^2.0|^3.0"
     },
diff --git a/src/Resources/config/services.yml b/src/Resources/config/services.yml
index 592260d..43dc2f1 100644
--- a/src/Resources/config/services.yml
+++ b/src/Resources/config/services.yml
@@ -9,18 +9,10 @@ services:
     Webfactory\IcuTranslationBundle\Twig\:
         resource: '../../Twig'
 
-    webfactory_icu_translation.formatter.intl_formatter:
-        alias: Webfactory\IcuTranslationBundle\Translator\Formatting\IntlFormatter
-        deprecated: ~
-
     Webfactory\IcuTranslationBundle\Translator\Formatting\DefaultParameterDecorator:
         arguments:
             - '@Webfactory\IcuTranslationBundle\Translator\Formatting\IntlFormatter'
 
-    webfactory_icu_translation.formatter.default_parameters:
-        alias: Webfactory\IcuTranslationBundle\Translator\Formatting\DefaultParameterDecorator
-        deprecated: ~
-
     Webfactory\IcuTranslationBundle\Translator\Formatting\MissingParameterWarningDecorator:
         arguments:
             - '@Webfactory\IcuTranslationBundle\Translator\Formatting\DefaultParameterDecorator'
@@ -28,18 +20,10 @@ services:
         tags:
             - { name: monolog.logger, channel: webfactory_icu_translation }
 
-    webfactory_icu_translation.formatter.missing_parameters:
-        alias: Webfactory\IcuTranslationBundle\Translator\Formatting\MissingParameterWarningDecorator
-        deprecated: ~
-
     Webfactory\IcuTranslationBundle\Translator\Formatting\TwigParameterNormalizer:
         arguments:
             - '@Webfactory\IcuTranslationBundle\Translator\Formatting\MissingParameterWarningDecorator'
 
-    webfactory_icu_translation.formatter.twig_parameter_normalizer:
-        alias: Webfactory\IcuTranslationBundle\Translator\Formatting\TwigParameterNormalizer
-        deprecated: ~
-
     Webfactory\IcuTranslationBundle\Translator\Formatting\GracefulExceptionsDecorator:
         class: Webfactory\IcuTranslationBundle\Translator\Formatting\GracefulExceptionsDecorator
         arguments:
@@ -48,10 +32,6 @@ services:
         tags:
             - { name: monolog.logger, channel: webfactory_icu_translation }
 
-    webfactory_icu_translation.formatter.graceful_exceptions:
-        alias: Webfactory\IcuTranslationBundle\Translator\Formatting\GracefulExceptionsDecorator
-        deprecated: ~
-
     Webfactory\IcuTranslationBundle\Translator\FormatterDecorator:
         decorates: translator
         arguments:
@@ -65,7 +45,3 @@ services:
     # The top end of the Formatter stack set up by this bundle:
     Webfactory\IcuTranslationBundle\Translator\Formatting\FormatterInterface:
         alias: Webfactory\IcuTranslationBundle\Translator\Formatting\GracefulExceptionsDecorator
-
-    webfactory_icu_translation.formatter:
-        alias: Webfactory\IcuTranslationBundle\Translator\Formatting\FormatterInterface
-        deprecated: ~