diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index 2a8db4b..354c6df 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -20,11 +20,10 @@ class Configuration implements ConfigurationInterface
     /**
      * {@inheritdoc}
      */
-    public function getConfigTreeBuilder()
+    public function getConfigTreeBuilder(): TreeBuilder
     {
         $tb = new TreeBuilder('sherlockode_advanced_form');
-        // BC layer for symfony/config < 4.2
-        $root = \method_exists($tb, 'getRootNode') ? $tb->getRootNode() : $tb->root('sherlockode_advanced_form');
+        $root = $tb->getRootNode();
 
         $this->addStorageSection($root);
         $this->addUploaderSection($root);
diff --git a/DependencyInjection/SherlockodeAdvancedFormExtension.php b/DependencyInjection/SherlockodeAdvancedFormExtension.php
index 0ce0411..e7c591c 100644
--- a/DependencyInjection/SherlockodeAdvancedFormExtension.php
+++ b/DependencyInjection/SherlockodeAdvancedFormExtension.php
@@ -7,7 +7,7 @@
 use Symfony\Component\Config\FileLocator;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Definition;
-use Symfony\Component\DependencyInjection\Loader\YamlFileLoader;
+use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
 use Symfony\Component\DependencyInjection\Reference;
 use Symfony\Component\HttpKernel\DependencyInjection\Extension;
 
@@ -76,12 +76,12 @@ private function getStorageDefinition($name, $config)
      */
     private function loadServices(ContainerBuilder $container)
     {
-        $loader = new YamlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
+        $loader = new XmlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
         $toBeLoaded = [
-            'command.yml',
-            'controller.yml',
-            'form.yml',
-            'manager.yml',
+            'command.xml',
+            'controller.xml',
+            'form.xml',
+            'manager.xml',
         ];
         foreach ($toBeLoaded as $file) {
             $loader->load($file);
diff --git a/Form/DataTransformer/TemporaryUploadFileTransformer.php b/Form/DataTransformer/TemporaryUploadFileTransformer.php
index 942a586..2dab7ec 100644
--- a/Form/DataTransformer/TemporaryUploadFileTransformer.php
+++ b/Form/DataTransformer/TemporaryUploadFileTransformer.php
@@ -65,7 +65,6 @@ public function reverseTransform($data)
             $data->getFilename(),
             null,
             null,
-            null,
             true
         );
     }
diff --git a/Form/Type/DependentEntityType.php b/Form/Type/DependentEntityType.php
index 0724702..bd0e5e6 100644
--- a/Form/Type/DependentEntityType.php
+++ b/Form/Type/DependentEntityType.php
@@ -61,7 +61,7 @@ public function __construct(
         $this->router = $router;
     }
 
-    public function getParent()
+    public function getParent(): ?string
     {
         return EntityType::class;
     }
diff --git a/Form/Type/FileCollectionType.php b/Form/Type/FileCollectionType.php
index 80096fa..ef4e0f6 100644
--- a/Form/Type/FileCollectionType.php
+++ b/Form/Type/FileCollectionType.php
@@ -59,7 +59,7 @@ public function configureOptions(OptionsResolver $resolver)
         $resolver->setRequired('mapping');
     }
 
-    public function getParent()
+    public function getParent(): ?string
     {
         return CollectionType::class;
     }
diff --git a/Form/Type/FileType.php b/Form/Type/FileType.php
index 5973b5e..1861960 100644
--- a/Form/Type/FileType.php
+++ b/Form/Type/FileType.php
@@ -168,7 +168,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
     /**
      * {@inheritdoc}
      */
-    public function getBlockPrefix()
+    public function getBlockPrefix(): string
     {
         return 'afb_file';
     }
diff --git a/Form/Type/RemoveFileType.php b/Form/Type/RemoveFileType.php
index 01aed1c..00e2193 100644
--- a/Form/Type/RemoveFileType.php
+++ b/Form/Type/RemoveFileType.php
@@ -38,7 +38,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
     /**
      * @return string
      */
-    public function getBlockPrefix()
+    public function getBlockPrefix(): string
     {
         return 'afb_remove_file';
     }
diff --git a/Form/Type/TemporaryUploadedFileType.php b/Form/Type/TemporaryUploadedFileType.php
index e2e6524..6c2545d 100644
--- a/Form/Type/TemporaryUploadedFileType.php
+++ b/Form/Type/TemporaryUploadedFileType.php
@@ -76,7 +76,7 @@ public function configureOptions(OptionsResolver $resolver)
     /**
      * @return string
      */
-    public function getBlockPrefix()
+    public function getBlockPrefix(): string
     {
         return 'afb_temporary_uploaded_file';
     }
diff --git a/Form/Type/UploadFileType.php b/Form/Type/UploadFileType.php
index 05f105f..7a7e853 100644
--- a/Form/Type/UploadFileType.php
+++ b/Form/Type/UploadFileType.php
@@ -115,7 +115,7 @@ public function configureOptions(OptionsResolver $optionsResolver)
     /**
      * @return string
      */
-    public function getBlockPrefix()
+    public function getBlockPrefix(): string
     {
         return 'afb_upload_file';
     }
diff --git a/README.md b/README.md
index b5549b1..96104f3 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@ Import the routing in `config/routes.yml`
 
 ```yaml
 sherlockode_advanced_form:
-    resource: "@SherlockodeAdvancedFormBundle/Resources/config/routing/all.yml"
+    resource: "@SherlockodeAdvancedFormBundle/Resources/config/routing/all.xml"
 ```
 
 ### Step 4: Publish assets
diff --git a/Resources/config/command.xml b/Resources/config/command.xml
new file mode 100644
index 0000000..d2e6b77
--- /dev/null
+++ b/Resources/config/command.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<container xmlns="http://symfony.com/schema/dic/services"
+           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+           xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd"
+>
+    <services>
+        <service id="sherlockode_afb.command.remove_tmp_files" class="Sherlockode\AdvancedFormBundle\Command\RemoveTemporaryFileCommand">
+            <argument type="service" id="doctrine.orm.entity_manager"/>
+            <argument type="service" id="sherlockode_afb.storage.tmp_storage"/>
+            <argument>%sherlockode_afb.tmp_uploaded_file_class%</argument>
+            <tag name="console.command"/>
+        </service>
+    </services>
+</container>
diff --git a/Resources/config/command.yml b/Resources/config/command.yml
deleted file mode 100644
index 7af3876..0000000
--- a/Resources/config/command.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-services:
-    sherlockode_afb.command.remove_tmp_files:
-        class: Sherlockode\AdvancedFormBundle\Command\RemoveTemporaryFileCommand
-        arguments:
-            - '@doctrine.orm.entity_manager'
-            - '@sherlockode_afb.storage.tmp_storage'
-            - '%sherlockode_afb.tmp_uploaded_file_class%'
-        tags: ['console.command']
diff --git a/Resources/config/controller.xml b/Resources/config/controller.xml
new file mode 100644
index 0000000..2cdef0b
--- /dev/null
+++ b/Resources/config/controller.xml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<container xmlns="http://symfony.com/schema/dic/services"
+           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+           xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd"
+>
+    <services>
+        <service id="sherlockode_afb.file_upload.controller" class="Sherlockode\AdvancedFormBundle\Controller\FileUploadController" public="true">
+            <argument type="service" id="sherlockode_afb.upload_manager"/>
+            <argument type="service" id="sherlockode_afb.mapping_manager"/>
+            <argument type="service" id="doctrine.orm.entity_manager"/>
+            <argument type="service" id="event_dispatcher"/>
+            <call method="setContainer">
+                <argument type="service" id="service_container"/>
+            </call>
+        </service>
+        <service id="sherlockode_afb.file_upload.temporary_upload_controller" class="Sherlockode\AdvancedFormBundle\Controller\TemporaryFileUploadController" public="true">
+            <argument type="service" id="sherlockode_afb.upload_manager"/>
+            <argument>%sherlockode_afb.tmp_uploaded_file_class%</argument>
+            <argument type="service" id="sherlockode_afb.storage.tmp_storage"/>
+            <argument type="service" id="event_dispatcher"/>
+            <call method="setContainer">
+                <argument type="service" id="service_container"/>
+            </call>
+        </service>
+        <service id="sherlockode_afb.dependent_entity.controller" class="Sherlockode\AdvancedFormBundle\Controller\DependentEntityController" public="true">
+            <argument type="service" id="event_dispatcher"/>
+            <argument type="service" id="sherlockode_afb.dependent_entity.mapper_pool"/>
+            <call method="setContainer">
+                <argument type="service" id="service_container"/>
+            </call>
+        </service>
+    </services>
+</container>
diff --git a/Resources/config/controller.yml b/Resources/config/controller.yml
deleted file mode 100644
index 51598cd..0000000
--- a/Resources/config/controller.yml
+++ /dev/null
@@ -1,24 +0,0 @@
-services:
-    sherlockode_afb.file_upload.controller:
-        class: Sherlockode\AdvancedFormBundle\Controller\FileUploadController
-        public: true
-        arguments:
-            - '@sherlockode_afb.upload_manager'
-            - '@sherlockode_afb.mapping_manager'
-            - '@doctrine.orm.entity_manager'
-            - '@event_dispatcher'
-    sherlockode_afb.file_upload.temporary_upload_controller:
-        class: Sherlockode\AdvancedFormBundle\Controller\TemporaryFileUploadController
-        public: true
-        arguments:
-            - '@sherlockode_afb.upload_manager'
-            - '%sherlockode_afb.tmp_uploaded_file_class%'
-            - '@sherlockode_afb.storage.tmp_storage'
-            - '@event_dispatcher'
-
-    sherlockode_afb.dependent_entity.controller:
-        class: Sherlockode\AdvancedFormBundle\Controller\DependentEntityController
-        public: true
-        arguments:
-            - '@event_dispatcher'
-            - '@sherlockode_afb.dependent_entity.mapper_pool'
diff --git a/Resources/config/form.xml b/Resources/config/form.xml
new file mode 100644
index 0000000..981ea07
--- /dev/null
+++ b/Resources/config/form.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<container xmlns="http://symfony.com/schema/dic/services"
+           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+           xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd"
+>
+    <services>
+        <service id="sherlockode_afb.file.form_entity_type" class="Sherlockode\AdvancedFormBundle\Form\Type\EntityMappingType">
+            <argument type="service" id="doctrine.orm.entity_manager"/>
+            <argument type="service" id="sherlockode_afb.mapping_manager"/>
+            <tag name="form.type"/>
+        </service>
+        <service id="sherlockode_afb.file.form_type" class="Sherlockode\AdvancedFormBundle\Form\Type\FileType">
+            <argument type="service" id="router"/>
+            <argument type="service" id="sherlockode_afb.upload_manager"/>
+            <argument type="service" id="sherlockode_afb.mapping_manager"/>
+            <argument>%sherlockode_afb.tmp_uploaded_file_dir%</argument>
+            <tag name="form.type"/>
+        </service>
+        <service id="sherlockode_afb.file.collection_type" class="Sherlockode\AdvancedFormBundle\Form\Type\FileCollectionType">
+            <tag name="form.type"/>
+        </service>
+        <service id="sherlockode_afb.file.tmp_type" class="Sherlockode\AdvancedFormBundle\Form\Type\TemporaryUploadedFileType">
+            <argument type="service" id="doctrine.orm.entity_manager"/>
+            <argument>%sherlockode_afb.tmp_uploaded_file_class%</argument>
+            <tag name="form.type"/>
+        </service>
+        <service id="sherlockode_afb.file.upload_type" class="Sherlockode\AdvancedFormBundle\Form\Type\UploadFileType">
+            <argument type="service" id="sherlockode_afb.mapping_manager"/>
+            <argument type="service" id="translator"/>
+            <tag name="form.type"/>
+        </service>
+        <service id="sherlockode_afb.form.dependent_entity_type" class="Sherlockode\AdvancedFormBundle\Form\Type\DependentEntityType">
+            <argument type="service" id="doctrine.orm.entity_manager"/>
+            <argument type="service" id="translator"/>
+            <argument type="service" id="sherlockode_afb.dependent_entity.mapper_pool"/>
+            <argument type="service" id="router"/>
+            <tag name="form.type"/>
+        </service>
+    </services>
+</container>
diff --git a/Resources/config/form.yml b/Resources/config/form.yml
deleted file mode 100644
index 15af2b9..0000000
--- a/Resources/config/form.yml
+++ /dev/null
@@ -1,38 +0,0 @@
-services:
-    sherlockode_afb.file.form_entity_type:
-        class: Sherlockode\AdvancedFormBundle\Form\Type\EntityMappingType
-        arguments:
-            - '@doctrine.orm.entity_manager'
-            - '@sherlockode_afb.mapping_manager'
-        tags: ['form.type']
-    sherlockode_afb.file.form_type:
-        class: Sherlockode\AdvancedFormBundle\Form\Type\FileType
-        arguments:
-            - '@router'
-            - '@sherlockode_afb.upload_manager'
-            - '@sherlockode_afb.mapping_manager'
-            - '%sherlockode_afb.tmp_uploaded_file_dir%'
-        tags: ['form.type']
-    sherlockode_afb.file.collection_type:
-        class: Sherlockode\AdvancedFormBundle\Form\Type\FileCollectionType
-        tags: ['form.type']
-    sherlockode_afb.file.tmp_type:
-        class: Sherlockode\AdvancedFormBundle\Form\Type\TemporaryUploadedFileType
-        arguments:
-            - '@doctrine.orm.entity_manager'
-            - '%sherlockode_afb.tmp_uploaded_file_class%'
-        tags: ['form.type']
-    sherlockode_afb.file.upload_type:
-        class: Sherlockode\AdvancedFormBundle\Form\Type\UploadFileType
-        arguments:
-            - '@sherlockode_afb.mapping_manager'
-            - '@translator'
-        tags: ['form.type']
-    sherlockode_afb.form.dependent_entity_type:
-        class: Sherlockode\AdvancedFormBundle\Form\Type\DependentEntityType
-        arguments:
-            - '@doctrine.orm.entity_manager'
-            - '@translator'
-            - '@sherlockode_afb.dependent_entity.mapper_pool'
-            - '@router'
-        tags: ['form.type']
diff --git a/Resources/config/manager.xml b/Resources/config/manager.xml
new file mode 100644
index 0000000..5ab69a1
--- /dev/null
+++ b/Resources/config/manager.xml
@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<container xmlns="http://symfony.com/schema/dic/services"
+           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+           xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd"
+>
+    <services>
+        <service id="sherlockode_afb.upload_handler.vich" class="Sherlockode\AdvancedFormBundle\UploadHandler\VichUploadHandler">
+            <argument type="service" id="vich_uploader.upload_handler"/>
+            <argument type="service" id="annotation_reader"/>
+            <tag name="sherlockode_afb.upload_handler" alias="vich"/>
+        </service>
+        <service id="sherlockode_afb.upload_handler.property" class="Sherlockode\AdvancedFormBundle\UploadHandler\PropertyUploadHandler">
+            <argument type="service" id="sherlockode_afb.mapping_manager"/>
+            <argument/>
+            <tag name="sherlockode_afb.upload_handler" alias="property"/>
+        </service>
+        <service id="sherlockode_afb.upload_manager" class="Sherlockode\AdvancedFormBundle\Manager\UploadManager">
+            <argument type="service" id="doctrine.orm.entity_manager"/>
+            <argument type="service" id="sherlockode_afb.storage.tmp_storage"/>
+            <argument>%sherlockode_afb.tmp_uploaded_file_class%</argument>
+        </service>
+        <service id="sherlockode_afb.mapping_manager" class="Sherlockode\AdvancedFormBundle\Manager\MappingManager">
+            <call method="setMappingData">
+                <argument>%sherlockode_afb.uploader_mappings%</argument>
+            </call>
+        </service>
+        <service id="sherlockode_afb.storage.tmp_storage" class="Sherlockode\AdvancedFormBundle\Storage\FilesystemStorage">
+            <argument>%sherlockode_afb.tmp_uploaded_file_dir%</argument>
+        </service>
+        <service id="sherlockode_afb.twig_extension" class="Sherlockode\AdvancedFormBundle\Twig\Extension\UploaderExtension">
+            <argument type="service" id="router"/>
+            <argument type="service" id="sherlockode_afb.mapping_manager"/>
+            <argument type="service" id="sherlockode_afb.upload_manager"/>
+            <tag name="twig.extension"/>
+        </service>
+        <service id="sherlockode_afb.dependent_entity.mapper_pool" class="Sherlockode\AdvancedFormBundle\DependentEntity\DependentMapperPool">
+        </service>
+    </services>
+</container>
diff --git a/Resources/config/manager.yml b/Resources/config/manager.yml
deleted file mode 100644
index ee74091..0000000
--- a/Resources/config/manager.yml
+++ /dev/null
@@ -1,45 +0,0 @@
-services:
-    sherlockode_afb.upload_handler.vich:
-        class: Sherlockode\AdvancedFormBundle\UploadHandler\VichUploadHandler
-        arguments:
-            - '@vich_uploader.upload_handler'
-            - '@annotation_reader'
-        tags:
-            - { name: 'sherlockode_afb.upload_handler', alias: vich }
-
-    sherlockode_afb.upload_handler.property:
-        class: Sherlockode\AdvancedFormBundle\UploadHandler\PropertyUploadHandler
-        arguments:
-            - '@sherlockode_afb.mapping_manager'
-            - ~
-        tags:
-            - { name: 'sherlockode_afb.upload_handler', alias: property }
-
-    sherlockode_afb.upload_manager:
-        class: Sherlockode\AdvancedFormBundle\Manager\UploadManager
-        arguments:
-            - '@doctrine.orm.entity_manager'
-            - '@sherlockode_afb.storage.tmp_storage'
-            - '%sherlockode_afb.tmp_uploaded_file_class%'
-
-    sherlockode_afb.mapping_manager:
-        class: Sherlockode\AdvancedFormBundle\Manager\MappingManager
-        calls:
-            - [setMappingData, ['%sherlockode_afb.uploader_mappings%']]
-
-    sherlockode_afb.storage.tmp_storage:
-        class: Sherlockode\AdvancedFormBundle\Storage\FilesystemStorage
-        arguments:
-            - '%sherlockode_afb.tmp_uploaded_file_dir%'
-
-    sherlockode_afb.twig_extension:
-        class: Sherlockode\AdvancedFormBundle\Twig\Extension\UploaderExtension
-        arguments:
-            - '@router'
-            - '@sherlockode_afb.mapping_manager'
-            - '@sherlockode_afb.upload_manager'
-        tags:
-            - { name: twig.extension }
-
-    sherlockode_afb.dependent_entity.mapper_pool:
-        class: Sherlockode\AdvancedFormBundle\DependentEntity\DependentMapperPool
diff --git a/Resources/config/routing/all.xml b/Resources/config/routing/all.xml
new file mode 100644
index 0000000..69e1974
--- /dev/null
+++ b/Resources/config/routing/all.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<routes xmlns="http://symfony.com/schema/routing"
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:schemaLocation="http://symfony.com/schema/routing http://symfony.com/schema/routing/routing-1.0.xsd"
+>
+    <import resource="@SherlockodeAdvancedFormBundle/Resources/config/routing/dependent_entity.xml" />
+    <import resource="@SherlockodeAdvancedFormBundle/Resources/config/routing/upload.xml" />
+</routes>
diff --git a/Resources/config/routing/all.yml b/Resources/config/routing/all.yml
deleted file mode 100644
index 5deb390..0000000
--- a/Resources/config/routing/all.yml
+++ /dev/null
@@ -1,4 +0,0 @@
-sherlockode_afb.dependent_entity:
-    resource: './dependent_entity.yml'
-sherlockode_afb.file_upload:
-    resource: './upload.yml'
diff --git a/Resources/config/routing/dependent_entity.xml b/Resources/config/routing/dependent_entity.xml
new file mode 100644
index 0000000..a4b2036
--- /dev/null
+++ b/Resources/config/routing/dependent_entity.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<routes xmlns="http://symfony.com/schema/routing"
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:schemaLocation="http://symfony.com/schema/routing http://symfony.com/schema/routing/routing-1.0.xsd"
+>
+    <route id="sherlockode_afb_dependent_results" path="/sherlockodeadvancedform/dependent-result">
+        <default key="_controller">sherlockode_afb.dependent_entity.controller:getDependentResultsAction</default>
+    </route>
+</routes>
diff --git a/Resources/config/routing/dependent_entity.yml b/Resources/config/routing/dependent_entity.yml
deleted file mode 100644
index 2819cd5..0000000
--- a/Resources/config/routing/dependent_entity.yml
+++ /dev/null
@@ -1,3 +0,0 @@
-sherlockode_afb_dependent_results:
-    path: /sherlockodeadvancedform/dependent-result
-    defaults: { _controller: sherlockode_afb.dependent_entity.controller:getDependentResultsAction }
diff --git a/Resources/config/routing/upload.xml b/Resources/config/routing/upload.xml
new file mode 100644
index 0000000..cc99e23
--- /dev/null
+++ b/Resources/config/routing/upload.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<routes xmlns="http://symfony.com/schema/routing"
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:schemaLocation="http://symfony.com/schema/routing http://symfony.com/schema/routing/routing-1.0.xsd"
+>
+    <route id="sherlockode_afb_upload" path="/sherlockodeadvancedform/upload">
+        <default key="_controller">sherlockode_afb.file_upload.controller:uploadFileAction</default>
+    </route>
+    <route id="sherlockode_afb_remove" path="/sherlockodeadvancedform/remove">
+        <default key="_controller">sherlockode_afb.file_upload.controller:removeFileAction</default>
+    </route>
+    <route id="sherlockode_afb_upload_tmp" path="/sherlockodeadvancedform/upload_tmp">
+        <default key="_controller">sherlockode_afb.file_upload.temporary_upload_controller:uploadTmpAction</default>
+    </route>
+    <route id="sherlockode_afb_remove_tmp" path="/sherlockodeadvancedform/remove_tmp">
+        <default key="_controller">sherlockode_afb.file_upload.temporary_upload_controller:removeTmpFileAction</default>
+    </route>
+    <route id="sherlockode_afb_preview" path="/sherlockodeadvancedform/uploaded/{token}">
+        <default key="_controller">sherlockode_afb.file_upload.temporary_upload_controller:viewUploadedFileAction</default>
+    </route>
+</routes>
diff --git a/Resources/config/routing/upload.yml b/Resources/config/routing/upload.yml
deleted file mode 100644
index 5250e14..0000000
--- a/Resources/config/routing/upload.yml
+++ /dev/null
@@ -1,19 +0,0 @@
-sherlockode_afb_upload:
-    path: /sherlockodeadvancedform/upload
-    defaults: { _controller: sherlockode_afb.file_upload.controller:uploadFileAction }
-
-sherlockode_afb_remove:
-    path: /sherlockodeadvancedform/remove
-    defaults: { _controller: sherlockode_afb.file_upload.controller:removeFileAction }
-
-sherlockode_afb_upload_tmp:
-    path: /sherlockodeadvancedform/upload_tmp
-    defaults: { _controller: sherlockode_afb.file_upload.temporary_upload_controller:uploadTmpAction }
-
-sherlockode_afb_remove_tmp:
-    path: /sherlockodeadvancedform/remove_tmp
-    defaults: { _controller: sherlockode_afb.file_upload.temporary_upload_controller:removeTmpFileAction }
-
-sherlockode_afb_preview:
-    path: /sherlockodeadvancedform/uploaded/{token}
-    defaults: { _controller: sherlockode_afb.file_upload.temporary_upload_controller:viewUploadedFileAction }
diff --git a/composer.json b/composer.json
index f68c6d5..01e43b6 100644
--- a/composer.json
+++ b/composer.json
@@ -10,8 +10,8 @@
         }
     ],
     "require": {
-        "php": "^7.1",
-        "symfony/framework-bundle": "^3.4|^4.0|^5.0",
+        "php": "^7.4|^8.0",
+        "symfony/framework-bundle": "^4.4|^5.0",
         "twig/twig": "^2.0|^3.0"
     },
     "suggest": {