diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index 8d198a1b7..0e7d0ed3a 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -22,9 +22,6 @@ jobs:
             drupal-core: '10.2.x'
             phpstan: '0'
           # We only need to run PHPStan once on the latest PHP version.
-          - php-versions: '8.3'
-            drupal-core: '10.3.x'
-            phpstan: '1'
           - php-versions: '8.3'
             drupal-core: '11.0.x'
             phpstan: '1'
diff --git a/src/Entity/Server.php b/src/Entity/Server.php
index 78511c4da..3f4ffec80 100644
--- a/src/Entity/Server.php
+++ b/src/Entity/Server.php
@@ -518,7 +518,6 @@ protected function getPersistedQueryLoader() {
   protected function getValidationRules() {
     return function (OperationParams $params, DocumentNode $document, $operation) {
       // queryId is not documented properly in the library, it can be NULL.
-      // @phpstan-ignore-next-line
       if (isset($params->queryId)) {
         // Assume that pre-parsed documents are already validated. This allows
         // us to store pre-validated query documents e.g. for persisted queries
@@ -528,7 +527,6 @@ protected function getValidationRules() {
 
       // PHPStan thinks this is unreachable code because of the wrongly
       // documented $params->queryId.
-      // @phpstan-ignore-next-line
       $rules = array_values(DocumentValidator::defaultRules());
       if ($this->getDisableIntrospection()) {
         $rules[] = new DisableIntrospection();
diff --git a/src/Plugin/GraphQL/DataProducer/Entity/Fields/Image/ImageDerivative.php b/src/Plugin/GraphQL/DataProducer/Entity/Fields/Image/ImageDerivative.php
index a77d32ad7..959694dad 100644
--- a/src/Plugin/GraphQL/DataProducer/Entity/Fields/Image/ImageDerivative.php
+++ b/src/Plugin/GraphQL/DataProducer/Entity/Fields/Image/ImageDerivative.php
@@ -97,12 +97,16 @@ public function resolve(FileInterface $entity = NULL, $style, RefinableCacheable
     $access = $entity->access('view', NULL, TRUE);
     $metadata->addCacheableDependency($access);
     if ($access->isAllowed() && $image_style = ImageStyle::load($style)) {
-
-      /** @var \Drupal\Core\Image\ImageInterface $image */
-      $image = \Drupal::service('image.factory')->get($entity->getFileUri());
-      if ($image->isValid()) {
-        $width = $image->getWidth();
-        $height = $image->getHeight();
+      $width = $entity->width;
+      $height = $entity->height;
+
+      if (!isset($width) || !isset($height)) {
+        /** @var \Drupal\Core\Image\ImageInterface $image */
+        $image = \Drupal::service('image.factory')->get($entity->getFileUri());
+        if ($image->isValid()) {
+          $width = $image->getWidth();
+          $height = $image->getHeight();
+        }
       }
 
       // Determine the dimensions of the styled image.
diff --git a/tests/src/Kernel/DataProducer/Entity/Fields/Image/ImageDerivativeTest.php b/tests/src/Kernel/DataProducer/Entity/Fields/Image/ImageDerivativeTest.php
index 375fff3ae..2576720eb 100644
--- a/tests/src/Kernel/DataProducer/Entity/Fields/Image/ImageDerivativeTest.php
+++ b/tests/src/Kernel/DataProducer/Entity/Fields/Image/ImageDerivativeTest.php
@@ -62,6 +62,9 @@ public function setUp(): void {
 
     $this->file->method('getFileUri')->willReturn($this->fileUri);
     $this->file->method('access')->willReturn((new AccessResultAllowed())->addCacheTags(['test_tag']));
+    // @todo Remove hard-coded properties and only rely on image factory.
+    @$this->file->width = 600;
+    @$this->file->height = 400;
 
     $this->style = ImageStyle::create(['name' => 'test_style']);
     $effect = [