diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3fa573d7b98..438b1229c84 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -65,8 +65,6 @@ jobs:
           path: ${{ steps.composercache.outputs.dir }}
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
           restore-keys: ${{ runner.os }}-composer-
-      - name: Allow unstable project dependencies
-        run: composer config minimum-stability dev
       - name: Update project dependencies
         run: composer update --no-interaction --no-progress --ansi
       - name: Require Symfony components
diff --git a/src/Core/Bridge/Symfony/Bundle/Command/UpgradeApiResourceCommand.php b/src/Core/Bridge/Symfony/Bundle/Command/UpgradeApiResourceCommand.php
index d5636e29204..dc65594ad0b 100644
--- a/src/Core/Bridge/Symfony/Bundle/Command/UpgradeApiResourceCommand.php
+++ b/src/Core/Bridge/Symfony/Bundle/Command/UpgradeApiResourceCommand.php
@@ -46,14 +46,14 @@ final class UpgradeApiResourceCommand extends Command
     private $identifiersExtractor;
     private $localCache = [];
 
-    public function __construct(ResourceNameCollectionFactoryInterface $resourceNameCollectionFactory, ResourceMetadataFactoryInterface $resourceMetadataFactory, SubresourceOperationFactoryInterface $subresourceOperationFactory, SubresourceTransformer $subresourceTransformer, AnnotationReader $reader, IdentifiersExtractorInterface $identifiersExtractor)
+    public function __construct(ResourceNameCollectionFactoryInterface $resourceNameCollectionFactory, ResourceMetadataFactoryInterface $resourceMetadataFactory, SubresourceOperationFactoryInterface $subresourceOperationFactory, SubresourceTransformer $subresourceTransformer, IdentifiersExtractorInterface $identifiersExtractor, AnnotationReader $reader = null)
     {
         $this->resourceNameCollectionFactory = $resourceNameCollectionFactory;
         $this->resourceMetadataFactory = $resourceMetadataFactory;
         $this->subresourceOperationFactory = $subresourceOperationFactory;
         $this->subresourceTransformer = $subresourceTransformer;
-        $this->reader = $reader;
         $this->identifiersExtractor = $identifiersExtractor;
+        $this->reader = $reader;
 
         parent::__construct();
     }
@@ -248,6 +248,10 @@ private function readApiResource(string $resourceClass): array
             return [$attributes[0]->newInstance(), false];
         }
 
+        if (null === $this->reader) {
+            throw new \RuntimeException(sprintf('Resource "%s" not found.', $resourceClass));
+        }
+
         return [$this->reader->getClassAnnotation($reflectionClass, ApiResource::class), true];
     }
 }
diff --git a/src/Symfony/Bundle/Resources/config/legacy/upgrade.xml b/src/Symfony/Bundle/Resources/config/legacy/upgrade.xml
index a44d410c108..33f0b6094fb 100644
--- a/src/Symfony/Bundle/Resources/config/legacy/upgrade.xml
+++ b/src/Symfony/Bundle/Resources/config/legacy/upgrade.xml
@@ -12,8 +12,8 @@
             <argument type="service" id="api_platform.metadata.resource.metadata_factory" />
             <argument type="service" id="api_platform.subresource_operation_factory" />
             <argument type="service" id="api_platform.upgrade.subresource_transformer" />
-            <argument type="service" id="annotations.reader" />
             <argument type="service" id="api_platform.identifiers_extractor.legacy" />
+            <argument type="service" id="annotations.reader" on-invalid="ignore" />
         </service>
     </services>
 
diff --git a/tests/Core/Bridge/Symfony/Bundle/Command/UpgradeApiResourceCommandTest.php b/tests/Core/Bridge/Symfony/Bundle/Command/UpgradeApiResourceCommandTest.php
index bc1b88225bc..a67f0904c4b 100644
--- a/tests/Core/Bridge/Symfony/Bundle/Command/UpgradeApiResourceCommandTest.php
+++ b/tests/Core/Bridge/Symfony/Bundle/Command/UpgradeApiResourceCommandTest.php
@@ -40,7 +40,7 @@ private function getCommandTester(ResourceNameCollectionFactoryInterface $resour
         $application->setCatchExceptions(false);
         $application->setAutoExit(false);
 
-        $application->add(new UpgradeApiResourceCommand($resourceNameCollectionFactory, $resourceMetadataFactory, $subresourceOperationFactory, new SubresourceTransformer(), new AnnotationReader(), $identifiersExtractor->reveal()));
+        $application->add(new UpgradeApiResourceCommand($resourceNameCollectionFactory, $resourceMetadataFactory, $subresourceOperationFactory, new SubresourceTransformer(), $identifiersExtractor->reveal(), new AnnotationReader()));
 
         $command = $application->find('api:upgrade-resource');