diff --git a/src/GraphQl/Action/EntrypointAction.php b/src/GraphQl/Action/EntrypointAction.php
index dcdd4a1dfd8..f0b4eec54e4 100644
--- a/src/GraphQl/Action/EntrypointAction.php
+++ b/src/GraphQl/Action/EntrypointAction.php
@@ -86,15 +86,16 @@ private function parseRequest(Request $request): array
             return [$query, $operationName, $variables];
         }
 
-        if ('json' === $request->getContentType()) {
+        $contentType = method_exists(Request::class, 'getContentTypeFormat') ? $request->getContentTypeFormat() : $request->getContentType();
+        if ('json' === $contentType) {
             return $this->parseData($query, $operationName, $variables, $request->getContent());
         }
 
-        if ('graphql' === $request->getContentType()) {
+        if ('graphql' === $contentType) {
             $query = $request->getContent();
         }
 
-        if (\in_array($request->getContentType(), ['multipart', 'form'], true)) {
+        if (\in_array($contentType, ['multipart', 'form'], true)) {
             return $this->parseMultipartRequest($query, $operationName, $variables, $request->request->all(), $request->files->all());
         }
 
diff --git a/src/Serializer/SerializerContextBuilder.php b/src/Serializer/SerializerContextBuilder.php
index b9de4952c3a..01b904e8cd3 100644
--- a/src/Serializer/SerializerContextBuilder.php
+++ b/src/Serializer/SerializerContextBuilder.php
@@ -72,7 +72,7 @@ public function createFromRequest(Request $request, bool $normalization, array $
                 }
             }
 
-            if ('csv' === $request->getContentType()) {
+            if ('csv' === (method_exists(Request::class, 'getContentTypeFormat') ? $request->getContentTypeFormat() : $request->getContentType())) {
                 $context[CsvEncoder::AS_COLLECTION_KEY] = false;
             }
         }