diff --git a/composer.json b/composer.json
index 36490c12..297c9082 100644
--- a/composer.json
+++ b/composer.json
@@ -30,6 +30,7 @@
         "ext-xmlwriter": "*",
         "hautelook/templated-uri-bundle": "^3.4",
         "ibexa/core": "dev-ibx-8534-core-v5-p2 as 5.0.x-dev",
+        "ibexa/polyfill-php82": "^1.0",
         "lexik/jwt-authentication-bundle": "^2.8",
         "symfony/config": "^5.3",
         "symfony/dependency-injection": "^5.3",
diff --git a/src/lib/Server/Controller/Content.php b/src/lib/Server/Controller/Content.php
index 1e9e7ac8..8f94555a 100644
--- a/src/lib/Server/Controller/Content.php
+++ b/src/lib/Server/Controller/Content.php
@@ -15,6 +15,7 @@
 use Ibexa\Contracts\Core\Repository\Values\Content\Relation;
 use Ibexa\Contracts\Core\Repository\Values\Content\VersionInfo;
 use Ibexa\Contracts\Rest\Exceptions;
+use function Ibexa\PolyfillPhp82\iterator_to_array;
 use Ibexa\Rest\Message;
 use Ibexa\Rest\Server\Controller as RestController;
 use Ibexa\Rest\Server\Exceptions\BadRequestException;
@@ -359,7 +360,7 @@ public function loadContentVersions($contentId, Request $request)
         $contentInfo = $this->repository->getContentService()->loadContentInfo($contentId);
 
         return new Values\VersionList(
-            $this->repository->getContentService()->loadVersions($contentInfo),
+            iterator_to_array($this->repository->getContentService()->loadVersions($contentInfo)),
             $request->getPathInfo()
         );
     }
diff --git a/src/lib/Server/Input/Parser/Query.php b/src/lib/Server/Input/Parser/Query.php
index 6b144084..1ff0d23e 100644
--- a/src/lib/Server/Input/Parser/Query.php
+++ b/src/lib/Server/Input/Parser/Query.php
@@ -8,6 +8,7 @@
 namespace Ibexa\Rest\Server\Input\Parser;
 
 use Ibexa\Contracts\Core\Repository\Values\Content\Query\Criterion as CriterionValue;
+use Ibexa\Contracts\Core\Repository\Values\Content\Query\CriterionInterface;
 use Ibexa\Contracts\Rest\Input\ParsingDispatcher;
 use Ibexa\Rest\Server\Input\Parser\Criterion as CriterionParser;
 
@@ -89,11 +90,8 @@ abstract protected function buildQuery();
 
     /**
      * @param array $criteriaArray
-     * @param \Ibexa\Contracts\Rest\Input\ParsingDispatcher $parsingDispatcher
-     *
-     * @return \Ibexa\Contracts\Core\Repository\Values\Content\Query\Criterion|null A criterion, or a LogicalAnd with a set of Criterion, or null if an empty array was given
      */
-    private function processCriteriaArray(array $criteriaArray, ParsingDispatcher $parsingDispatcher)
+    private function processCriteriaArray(array $criteriaArray, ParsingDispatcher $parsingDispatcher): ?CriterionInterface
     {
         if (count($criteriaArray) === 0) {
             return null;