diff --git a/src/ArrayFile.php b/src/ArrayFile.php
index 02fd9b3..e8be566 100644
--- a/src/ArrayFile.php
+++ b/src/ArrayFile.php
@@ -305,6 +305,7 @@ protected function getAstReturnIndex(array $ast): ?int
             switch (get_class($item)) {
                 case Stmt\Use_::class:
                 case Stmt\Expression::class:
+                case Stmt\Declare_::class:
                     break;
                 case Stmt\Return_::class:
                     return $index;
diff --git a/tests/ArrayFileTest.php b/tests/ArrayFileTest.php
index 382f42d..8727b5b 100644
--- a/tests/ArrayFileTest.php
+++ b/tests/ArrayFileTest.php
@@ -845,4 +845,14 @@ public function testSingleLineCommentSubItem()
             str_replace("\r", '', $arrayFile->render())
         );
     }
+
+    public function testStrictFileTypes()
+    {
+        $file = __DIR__ . '/fixtures/array/strict-file-types.php';
+        $arrayFile = ArrayFile::open($file);
+
+        $code = $arrayFile->render();
+
+        $this->assertStringContainsString('declare', $code);
+    }
 }
diff --git a/tests/fixtures/array/strict-file-types.php b/tests/fixtures/array/strict-file-types.php
new file mode 100644
index 0000000..8bcef5d
--- /dev/null
+++ b/tests/fixtures/array/strict-file-types.php
@@ -0,0 +1,7 @@
+<?php
+
+declare(strict_types=1);
+
+return [
+    'foo' => Response::HTTP_OK
+];