diff --git a/StreamWrapper/src/ReadOnlyStream.php b/StreamWrapper/src/ReadOnlyStream.php
index d53b0c5..b2e3e0f 100644
--- a/StreamWrapper/src/ReadOnlyStream.php
+++ b/StreamWrapper/src/ReadOnlyStream.php
@@ -18,6 +18,8 @@ class ReadOnlyStream extends Stream
     /** @var ResourceLocatorInterface */
     protected static $locator;
 
+    public $context;
+
     /**
      * @param string $uri
      * @param string $mode