diff --git a/src/Kunstmaan/AdminBundle/EventListener/ToolbarListener.php b/src/Kunstmaan/AdminBundle/EventListener/ToolbarListener.php
index 4667e196c3..f82b397418 100644
--- a/src/Kunstmaan/AdminBundle/EventListener/ToolbarListener.php
+++ b/src/Kunstmaan/AdminBundle/EventListener/ToolbarListener.php
@@ -131,7 +131,10 @@ public function onKernelResponse(ResponseEvent $event)
         $url = $event->getRequest()->getRequestUri();
         $token = $this->tokenStorage->getToken();
 
-        if (null !== $token && method_exists($token, 'getProviderKey')) {
+        if (null !== $token && method_exists($token, 'getFirewallName')) {
+            $key = $token->getFirewallName();
+        } elseif (null !== $token && method_exists($token, 'getProviderKey')) {
+            // NEXT_MAJOR remove check when symfony 4.4 support is removed
             $key = $token->getProviderKey();
         } else {
             $key = $this->adminFirewallName;
diff --git a/src/Kunstmaan/FormBundle/Tests/DependencyInjection/ConfigurationTest.php b/src/Kunstmaan/FormBundle/Tests/DependencyInjection/ConfigurationTest.php
index 0cc800b7a1..4fb5a875b5 100644
--- a/src/Kunstmaan/FormBundle/Tests/DependencyInjection/ConfigurationTest.php
+++ b/src/Kunstmaan/FormBundle/Tests/DependencyInjection/ConfigurationTest.php
@@ -16,12 +16,7 @@ public function testConfiguration()
 
         $this->assertInstanceOf(TreeBuilder::class, $tree);
 
-        if (method_exists($tree, 'getRootNode')) {
-            $node = $tree->getRootNode();
-        } else {
-            // BC layer for symfony/config 4.1 and older
-            $node = $tree->root('kunstmaan_form');
-        }
+        $node = $tree->getRootNode();
         $this->assertInstanceOf(ArrayNodeDefinition::class, $node);
     }
 }
diff --git a/src/Kunstmaan/MultiDomainBundle/EventListener/HostOverrideListener.php b/src/Kunstmaan/MultiDomainBundle/EventListener/HostOverrideListener.php
index bc36f28b52..8a0316116c 100644
--- a/src/Kunstmaan/MultiDomainBundle/EventListener/HostOverrideListener.php
+++ b/src/Kunstmaan/MultiDomainBundle/EventListener/HostOverrideListener.php
@@ -6,16 +6,14 @@
 use Kunstmaan\AdminBundle\Helper\AdminRouteHelper;
 use Kunstmaan\AdminBundle\Helper\DomainConfigurationInterface;
 use Symfony\Component\HttpFoundation\RedirectResponse;
-use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
 use Symfony\Component\HttpKernel\Event\ResponseEvent;
 use Symfony\Component\HttpKernel\HttpKernelInterface;
-use Symfony\Component\Translation\TranslatorInterface as LegacyTranslatorInterface;
 use Symfony\Contracts\Translation\TranslatorInterface;
 
 class HostOverrideListener
 {
     /**
-     * @var LegacyTranslatorInterface|TranslatorInterface
+     * @var TranslatorInterface
      */
     protected $translator;
 
@@ -29,15 +27,8 @@ class HostOverrideListener
      */
     protected $adminRouteHelper;
 
-    public function __construct(
-        /* TranslatorInterface */ $translator,
-        DomainConfigurationInterface $domainConfiguration,
-        AdminRouteHelper $adminRouteHelper
-    ) {
-        if (!$translator instanceof LegacyTranslatorInterface && !$translator instanceof TranslatorInterface) {
-            throw new \InvalidArgumentException(sprintf('Argument "$translator" passed to "%s" must be of the type "%s" or "%s", "%s" given', __METHOD__, LegacyTranslatorInterface::class, TranslatorInterface::class, get_class($translator)));
-        }
-
+    public function __construct(TranslatorInterface $translator, DomainConfigurationInterface $domainConfiguration, AdminRouteHelper $adminRouteHelper)
+    {
         $this->translator = $translator;
         $this->domainConfiguration = $domainConfiguration;
         $this->adminRouteHelper = $adminRouteHelper;
diff --git a/src/Kunstmaan/MultiDomainBundle/Tests/EventListener/HostOverrideListenerTest.php b/src/Kunstmaan/MultiDomainBundle/Tests/EventListener/HostOverrideListenerTest.php
index 910d333581..070dbba4d9 100644
--- a/src/Kunstmaan/MultiDomainBundle/Tests/EventListener/HostOverrideListenerTest.php
+++ b/src/Kunstmaan/MultiDomainBundle/Tests/EventListener/HostOverrideListenerTest.php
@@ -12,8 +12,6 @@
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpFoundation\Session\Session;
 use Symfony\Component\HttpFoundation\Session\Storage\MockArraySessionStorage;
-use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
-use Symfony\Component\HttpKernel\Event\RequestEvent;
 use Symfony\Component\HttpKernel\Event\ResponseEvent;
 use Symfony\Component\HttpKernel\HttpKernelInterface;
 use Symfony\Component\HttpKernel\KernelInterface;
diff --git a/src/Kunstmaan/NodeBundle/Event/SlugSecurityEvent.php b/src/Kunstmaan/NodeBundle/Event/SlugSecurityEvent.php
index f9bb5127aa..60c4af301e 100644
--- a/src/Kunstmaan/NodeBundle/Event/SlugSecurityEvent.php
+++ b/src/Kunstmaan/NodeBundle/Event/SlugSecurityEvent.php
@@ -2,11 +2,11 @@
 
 namespace Kunstmaan\NodeBundle\Event;
 
-use Symfony\Contracts\EventDispatcher\Event;
 use Kunstmaan\NodeBundle\Entity\HasNodeInterface;
 use Kunstmaan\NodeBundle\Entity\Node;
 use Kunstmaan\NodeBundle\Entity\NodeTranslation;
 use Symfony\Component\HttpFoundation\Request;
+use Symfony\Contracts\EventDispatcher\Event;
 
 final class SlugSecurityEvent extends Event
 {
diff --git a/src/Kunstmaan/NodeSearchBundle/Search/AbstractElasticaSearcher.php b/src/Kunstmaan/NodeSearchBundle/Search/AbstractElasticaSearcher.php
index cd6bd8de73..2f016ea947 100644
--- a/src/Kunstmaan/NodeSearchBundle/Search/AbstractElasticaSearcher.php
+++ b/src/Kunstmaan/NodeSearchBundle/Search/AbstractElasticaSearcher.php
@@ -99,10 +99,6 @@ public function getSearchResult()
         $search = new Search($this->search->getClient());
         $search->addIndex($index);
 
-        if (method_exists($search, 'getType')) {
-            $search->addType($index->getType($this->indexType));
-        }
-
         return $search->search($this->query);
     }
 
diff --git a/src/Kunstmaan/SearchBundle/Provider/ElasticaProvider.php b/src/Kunstmaan/SearchBundle/Provider/ElasticaProvider.php
index 1ebf24cf1e..e406c94319 100644
--- a/src/Kunstmaan/SearchBundle/Provider/ElasticaProvider.php
+++ b/src/Kunstmaan/SearchBundle/Provider/ElasticaProvider.php
@@ -67,11 +67,6 @@ public function getIndex($indexName)
      */
     public function createDocument($uid, $document, $indexName = '', $indexType = '')
     {
-        if (method_exists(Document::class, 'setType')) {
-            // @phpstan-ignore-next-line
-            return new Document($uid, $document, $indexType, $indexName);
-        }
-
         return new Document($uid, $document, $indexName);
     }
 
@@ -87,9 +82,6 @@ public function addDocument($indexName, $indexType, $document, $uid)
     {
         $doc = $this->createDocument($uid, $document);
         $index = $this->getClient()->getIndex($indexName);
-        if (method_exists($index, 'getType')) {
-            return $index->getType($indexType)->addDocument($doc);
-        }
 
         return $index->addDocument($doc);
     }
@@ -131,12 +123,6 @@ public function deleteDocuments($indexName, $indexType, array $ids)
     {
         $index = $this->getIndex($indexName);
 
-        if (method_exists($index, 'getType')) {
-            $type = $index->getType($indexType);
-
-            return $this->getClient()->deleteIds($ids, $index, $type);
-        }
-
         return $this->getClient()->deleteIds($ids, $index);
     }