diff --git a/src/Responses/Responses/Output/OutputMessageContentOutputTextAnnotationsContainerFile.php b/src/Responses/Responses/Output/OutputMessageContentOutputTextAnnotationsContainerFile.php
index 9fe6c50c..1a84964d 100644
--- a/src/Responses/Responses/Output/OutputMessageContentOutputTextAnnotationsContainerFile.php
+++ b/src/Responses/Responses/Output/OutputMessageContentOutputTextAnnotationsContainerFile.php
@@ -9,7 +9,7 @@
 use OpenAI\Testing\Responses\Concerns\Fakeable;
 
 /**
- * @phpstan-type ContainerFileType array{file_id: string, type: 'container_file_citation', text?: string, start_index?: int, end_index?: int}
+ * @phpstan-type ContainerFileType array{file_id: string, filename: string, type: 'container_file_citation', container_id: string, text?: string, start_index?: int, end_index?: int}
  *
  * @implements ResponseContract<ContainerFileType>
  */
@@ -27,7 +27,9 @@ final class OutputMessageContentOutputTextAnnotationsContainerFile implements Re
      */
     private function __construct(
         public readonly string $fileId,
+        public readonly string $filename,
         public readonly string $type,
+        public readonly string $containerId,
         public readonly ?string $text,
         public readonly ?int $startIndex,
         public readonly ?int $endIndex,
@@ -40,7 +42,9 @@ public static function from(array $attributes): self
     {
         return new self(
             fileId: $attributes['file_id'],
+            filename: $attributes['filename'],
             type: $attributes['type'],
+            containerId: $attributes['container_id'],
             text: $attributes['text'] ?? null,
             startIndex: $attributes['start_index'] ?? null,
             endIndex: $attributes['end_index'] ?? null,
@@ -54,7 +58,9 @@ public function toArray(): array
     {
         $result = [
             'file_id' => $this->fileId,
+            'filename' => $this->filename,
             'type' => $this->type,
+            'container_id' => $this->containerId,
         ];
 
         if ($this->text !== null) {
diff --git a/tests/Fixtures/Responses.php b/tests/Fixtures/Responses.php
index ec2b0aae..39cc0ef9 100644
--- a/tests/Fixtures/Responses.php
+++ b/tests/Fixtures/Responses.php
@@ -591,6 +591,14 @@ function outputAnnotationMessage(): array
                         'index' => 294,
                         'type' => 'file_citation',
                     ],
+                    [
+                        'file_id' => 'cfile_15vdn2c43dec8191afde1f1fc40avec6',
+                        'filename' => 'image.png',
+                        'type' => 'container_file_citation',
+                        'container_id' => 'cntr_61vcf2b258d88128b3fc109db6fv61e406ebfd5bc0cbcbce',
+                        'start_index' => 133,
+                        'end_index' => 166,
+                    ],
                 ],
                 'text' => 'As of today, March 9, 2025, one notable positive news story...',
                 'type' => 'output_text',
diff --git a/tests/Responses/Responses/Output/OutputMessageContentOutputTextAnnotationsContainerFile.php b/tests/Responses/Responses/Output/OutputMessageContentOutputTextAnnotationsContainerFile.php
new file mode 100644
index 00000000..1a78bfac
--- /dev/null
+++ b/tests/Responses/Responses/Output/OutputMessageContentOutputTextAnnotationsContainerFile.php
@@ -0,0 +1,38 @@
+<?php
+
+use OpenAI\Responses\Responses\Output\OutputMessageContentOutputTextAnnotationsContainerFile;
+
+test('from', function () {
+    $annotation = outputAnnotationMessage()['content'][0]['annotations'][5];
+    $response = OutputMessageContentOutputTextAnnotationsContainerFile::from($annotation);
+
+    expect($response)
+        ->toBeInstanceOf(OutputMessageContentOutputTextAnnotationsContainerFile::class)
+        ->fileId->toBe('cfile_15vdn2c43dec8191afde1f1fc40avec6')
+        ->filename->toBe('image.png')
+        ->startIndex->toBe(133)
+        ->endIndex->toBe(166)
+        ->type->toBe('container_file_citation')
+        ->containerId->toBe('cntr_61vcf2b258d88128b3fc109db6fv61e406ebfd5bc0cbcbce');
+});
+
+test('as array accessible', function () {
+    $annotation = outputAnnotationMessage()['content'][0]['annotations'][5];
+    $response = OutputMessageContentOutputTextAnnotationsContainerFile::from($annotation);
+
+    expect($response['file_id'])->toBe('cfile_15vdn2c43dec8191afde1f1fc40avec6')
+        ->and($response['filename'])->toBe('image.png')
+        ->and($response['start_index'])->toBe(133)
+        ->and($response['end_index'])->toBe(166)
+        ->and($response['type'])->toBe('container_file_citation')
+        ->and($response['container_id'])->toBe('cntr_61vcf2b258d88128b3fc109db6fv61e406ebfd5bc0cbcbce');
+});
+
+test('to array', function () {
+    $annotation = outputAnnotationMessage()['content'][0]['annotations'][5];
+    $response = OutputMessageContentOutputTextAnnotationsContainerFile::from($annotation);
+
+    expect($response->toArray())
+        ->toBeArray()
+        ->toBe($annotation);
+});