diff --git a/src/Stream.php b/src/Stream.php
index aafba8e..8616989 100644
--- a/src/Stream.php
+++ b/src/Stream.php
@@ -21,6 +21,7 @@
 use function fstat;
 use function ftell;
 use function fwrite;
+use function is_array;
 use function is_resource;
 use function is_string;
 use function pclose;