diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index f89cac6..9aea0c0 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -7,13 +7,23 @@ on:
 
 jobs:
   unit-tests:
-    name: PHP ${{ matrix.php-version }}
+    name: Neos ${{ matrix.neos-version }}, PHP ${{ matrix.php-version }}
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
-        # The committed lock file resolves Neos 8.4, which requires PHP >= 8.2
-        php-version: ['8.2', '8.3']
+        include:
+          # Keeps the Neos 8 jobs on the PHPUnit version Neos 8 projects use
+          - neos-version: '8.4'
+            php-version: '8.2'
+            dev-constraints: '--with neos/buildessentials:~8.3.0 --with phpunit/phpunit:~9.6'
+          - neos-version: '8.4'
+            php-version: '8.3'
+            dev-constraints: '--with neos/buildessentials:~8.3.0 --with phpunit/phpunit:~9.6'
+          # Neos 9.2 requires PHP 8.4 and a package providing neos/contentrepositoryregistry-storageclient
+          - neos-version: '9.2'
+            php-version: '8.4'
+            additional-packages: 'neos/contentgraph-doctrinedbaladapter:~9.2.0'
     steps:
       - uses: actions/checkout@v4
 
@@ -24,6 +34,19 @@ jobs:
 
       - run: composer validate --strict
 
-      - run: composer install --prefer-dist --no-progress --no-interaction
+      - run: >
+          composer require --no-update --no-interaction
+          neos/neos:~${{ matrix.neos-version }}.0
+          neos/media-browser:~${{ matrix.neos-version }}.0
+          neos/fusion:~${{ matrix.neos-version }}.0
+          ${{ matrix.additional-packages }}
+
+      - run: composer update --prefer-dist --no-progress --no-interaction ${{ matrix.dev-constraints }}
+
+      - name: Edit template matches the Media Browser template
+        run: >
+          diff
+          <(grep -v 'partial="Asset/AiClassification"' Resources/Private/Templates/Asset/Edit.html)
+          Packages/Application/Neos.Media.Browser/Resources/Private/Templates/Asset/Edit.html
 
       - run: bin/phpunit
diff --git a/README.md b/README.md
index b180d36..09c64cf 100644
--- a/README.md
+++ b/README.md
@@ -47,6 +47,10 @@ pass `false` as third argument to suppress it.
 ## Supporting a new Neos version
 
 `Resources/Private/Templates/Asset/Edit.html` is a copy of the Media Browser template and differs from it by a
-single `f:render` line. Diff it against the upstream template of the new Neos version and re-apply that line.
-That copy is what ties the package to a Neos version, not the PHP code — the `neos/*` constraints in
-`composer.json` have to match the Neos version the template was copied from.
+single `f:render` line. That copy is what ties the package to a Neos version, not the PHP code. The Media Browser
+template is the same in Neos 8.4 and 9.2, so one copy serves both.
+
+The CI workflow checks this for every Neos version in its matrix: it diffs the copy, minus the `f:render` line,
+against the installed upstream template. To support a new Neos version, add it to the matrix and widen the
+`neos/*` constraints in `composer.json`. If the template check fails, the upstream template has changed and a
+single copy can no longer serve all supported versions.
diff --git a/Tests/Unit/Domain/Repository/AssetAiClassificationRepositoryTest.php b/Tests/Unit/Domain/Repository/AssetAiClassificationRepositoryTest.php
index 069a4cc..2fc253f 100644
--- a/Tests/Unit/Domain/Repository/AssetAiClassificationRepositoryTest.php
+++ b/Tests/Unit/Domain/Repository/AssetAiClassificationRepositoryTest.php
@@ -2,10 +2,10 @@
 
 namespace Networkteam\Neos\AssetAiClassification\Tests\Unit\Domain\Repository;
 
+use Doctrine\ORM\Configuration;
 use Doctrine\ORM\EntityManager;
 use Doctrine\ORM\Mapping\ClassMetadata;
 use Doctrine\ORM\Tools\SchemaTool;
-use Doctrine\ORM\Tools\Setup;
 use Doctrine\Persistence\Mapping\Driver\StaticPHPDriver;
 use Neos\Flow\Persistence\Aspect\PersistenceMagicInterface;
 use Neos\Flow\Persistence\Doctrine\PersistenceManager;
@@ -28,7 +28,11 @@ class AssetAiClassificationRepositoryTest extends UnitTestCase
     protected function setUp(): void
     {
         parent::setUp();
-        $configuration = Setup::createConfiguration(true);
+        // Built by hand: Doctrine's setup helpers require a cache library that Neos 9 does not install
+        $configuration = new Configuration();
+        $configuration->setProxyDir(sys_get_temp_dir());
+        $configuration->setProxyNamespace('Networkteam\Neos\AssetAiClassification\Tests\Proxies');
+        $configuration->setAutoGenerateProxyClasses(true);
         $configuration->setMetadataDriverImpl(new StaticPHPDriver([__DIR__]));
         $this->entityManager = EntityManager::create(['driver' => 'pdo_sqlite', 'memory' => true], $configuration);
         (new SchemaTool($this->entityManager))->createSchema([
diff --git a/Tests/Unit/Migrations/AssetAiClassificationMigrationTest.php b/Tests/Unit/Migrations/AssetAiClassificationMigrationTest.php
index 1c0f7eb..6ea8213 100644
--- a/Tests/Unit/Migrations/AssetAiClassificationMigrationTest.php
+++ b/Tests/Unit/Migrations/AssetAiClassificationMigrationTest.php
@@ -37,7 +37,7 @@ public function foreignKeyColumnUsesTheReferencedColumnsEncoding(string $charset
         self::assertStringContainsString('REFERENCES neos_media_domain_model_asset (persistence_object_identifier) ON DELETE CASCADE', $queries[1]->getStatement());
     }
 
-    public function assetIdentifierEncodings(): array
+    public static function assetIdentifierEncodings(): array
     {
         return [
             'MySQL 5.7 legacy' => ['utf8', 'utf8_unicode_ci', new MySQL57Platform()],
diff --git a/composer.json b/composer.json
index 44063be..e131326 100644
--- a/composer.json
+++ b/composer.json
@@ -10,13 +10,13 @@
   ],
   "require": {
     "php": "^8.0",
-    "neos/neos": "^8.3",
-    "neos/media-browser": "^8.3",
-    "neos/fusion": "^8.3"
+    "neos/neos": "^8.3 || ^9.0",
+    "neos/media-browser": "^8.3 || ^9.0",
+    "neos/fusion": "^8.3 || ^9.0"
   },
   "require-dev": {
-    "phpunit/phpunit": "~9.1",
-    "neos/buildessentials": "~8.3.0",
+    "phpunit/phpunit": "~9.1 || ~11.5",
+    "neos/buildessentials": "~8.3.0 || ~9.0",
     "mikey179/vfsstream": "~1.6"
   },
   "autoload": {