diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index 063e6515f..419545349 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -14,16 +14,20 @@ jobs:
       fail-fast: false
       matrix:
         php-versions: ['8.1', '8.2']
-        drupal-core: ['10.2.x']
+        drupal-core: ['10.3.x']
         phpstan: ['0']
         include:
           # Extra run to test older supported Drupal 10.1.x.
           - php-versions: '8.1'
             drupal-core: '10.1.x'
             phpstan: '0'
+          # Extra run to test older supported Drupal 10.2.x.
+          - php-versions: '8.1'
+            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: '10.2.x'
+            drupal-core: '10.3.x'
             phpstan: '1'
     steps:
       - name: Checkout Drupal core
diff --git a/src/Config/LanguageConfigOverride.php b/src/Config/LanguageConfigOverride.php
index 979b3bffb..f6c7c4171 100644
--- a/src/Config/LanguageConfigOverride.php
+++ b/src/Config/LanguageConfigOverride.php
@@ -75,7 +75,6 @@ public function getCacheSuffix() {
   public function createConfigObject($name, $collection = StorageInterface::DEFAULT_COLLECTION) {
     // The interface says we should return an object here, but we don't care and
     // this does not seem to break anything?
-    // @phpstan-ignore-next-line
     return NULL;
   }
 
diff --git a/src/GraphQL/Utility/FileUpload.php b/src/GraphQL/Utility/FileUpload.php
index 7f8cbd124..7543ea5c7 100644
--- a/src/GraphQL/Utility/FileUpload.php
+++ b/src/GraphQL/Utility/FileUpload.php
@@ -248,6 +248,8 @@ public function saveFileUpload(UploadedFile $uploaded_file, array $settings): Fi
 
     $temp_file_path = $uploaded_file->getRealPath();
 
+    // Drupal 10.2 compatibility: use the deprecated constant for now.
+    // @phpstan-ignore-next-line
     $file_uri = $this->fileSystem->getDestinationFilename($file_uri, FileSystemInterface::EXISTS_RENAME);
 
     // Lock based on the prepared file URI.
@@ -291,6 +293,8 @@ public function saveFileUpload(UploadedFile $uploaded_file, array $settings): Fi
       // FileSystemInterface::EXISTS_ERROR as the file location has already been
       // determined above in FileSystem::getDestinationFilename().
       try {
+        // Drupal 10.2 compatibility: use the deprecated constant for now.
+        // @phpstan-ignore-next-line
         $this->fileSystem->move($temp_file_path, $file_uri, FileSystemInterface::EXISTS_ERROR);
       }
       catch (FileException $e) {
diff --git a/tests/src/Kernel/DataProducer/RoutingTest.php b/tests/src/Kernel/DataProducer/RoutingTest.php
index 5c1f7461b..7c4e6ea66 100644
--- a/tests/src/Kernel/DataProducer/RoutingTest.php
+++ b/tests/src/Kernel/DataProducer/RoutingTest.php
@@ -35,6 +35,7 @@ class RoutingTest extends GraphQLTestBase {
   public function setUp(): void {
     parent::setUp();
 
+    $this->installEntitySchema('path_alias');
     $this->installEntitySchema('redirect');
     $this->installConfig(['redirect']);
 
@@ -129,7 +130,8 @@ public function testUrlPath(): void {
       'url' => $url,
     ]);
 
-    $this->assertEquals('/user/logout', $result);
+    // Starting with Drupal 10.3 the URL has a token at the end, ignore that.
+    $this->assertStringStartsWith('/user/logout', $result);
   }
 
   /**