diff --git a/src/Lib/DocumentResolver.php b/src/Lib/DocumentResolver.php
index 60f807b..27c56bf 100644
--- a/src/Lib/DocumentResolver.php
+++ b/src/Lib/DocumentResolver.php
@@ -15,7 +15,7 @@
 
 use Exception;
 use Pimcore\Document;
-use Pimcore\Document\Adapter;
+use Pimcore\Document\AdapterInterface;
 
 /**
  * @internal
@@ -25,7 +25,7 @@ final class DocumentResolver implements DocumentResolverInterface
     /**
      * @throws Exception
      */
-    public function getInstance(?string $adapter = null): ?Adapter
+    public function getInstance(?string $adapter = null): ?AdapterInterface
     {
         return Document::getInstance($adapter);
     }
@@ -40,7 +40,7 @@ public function isFileTypeSupported(string $filetype): bool
         return Document::isFileTypeSupported($filetype);
     }
 
-    public function getDefaultAdapter(): ?Adapter
+    public function getDefaultAdapter(): ?AdapterInterface
     {
         return Document::getDefaultAdapter();
     }
diff --git a/src/Lib/DocumentResolverInterface.php b/src/Lib/DocumentResolverInterface.php
index cefc399..da3a81c 100644
--- a/src/Lib/DocumentResolverInterface.php
+++ b/src/Lib/DocumentResolverInterface.php
@@ -14,7 +14,7 @@
 namespace Pimcore\Bundle\StaticResolverBundle\Lib;
 
 use Exception;
-use Pimcore\Document\Adapter;
+use Pimcore\Document\AdapterInterface;
 
 /**
  * @internal
@@ -24,11 +24,11 @@ interface DocumentResolverInterface
     /**
      * @throws Exception
      */
-    public function getInstance(?string $adapter = null): ?Adapter;
+    public function getInstance(?string $adapter = null): ?AdapterInterface;
 
     public function isAvailable(): bool;
 
     public function isFileTypeSupported(string $filetype): bool;
 
-    public function getDefaultAdapter(): ?Adapter;
+    public function getDefaultAdapter(): ?AdapterInterface;
 }
diff --git a/src/Lib/VideoResolver.php b/src/Lib/VideoResolver.php
index c99fa1c..cbe45b8 100644
--- a/src/Lib/VideoResolver.php
+++ b/src/Lib/VideoResolver.php
@@ -15,7 +15,7 @@
 
 use Exception;
 use Pimcore\Video;
-use Pimcore\Video\Adapter;
+use Pimcore\Video\AdapterInterface;
 
 /**
  * @internal
@@ -25,7 +25,7 @@ final class VideoResolver implements VideoResolverInterface
     /**
      * @throws Exception
      */
-    public function getInstance(): ?Adapter
+    public function getInstance(): ?AdapterInterface
     {
         return Video::getInstance();
     }
diff --git a/src/Lib/VideoResolverInterface.php b/src/Lib/VideoResolverInterface.php
index 4cd2c2a..64554ae 100644
--- a/src/Lib/VideoResolverInterface.php
+++ b/src/Lib/VideoResolverInterface.php
@@ -14,7 +14,7 @@
 namespace Pimcore\Bundle\StaticResolverBundle\Lib;
 
 use Exception;
-use Pimcore\Video\Adapter;
+use Pimcore\Video\AdapterInterface;
 
 /**
  * @internal
@@ -24,7 +24,7 @@ interface VideoResolverInterface
     /**
      * @throws Exception
      */
-    public function getInstance(): ?Adapter;
+    public function getInstance(): ?AdapterInterface;
 
     public function isAvailable(): bool;
 }