diff --git a/src/vistir/__init__.py b/src/vistir/__init__.py
index f54a309..ec428e1 100644
--- a/src/vistir/__init__.py
+++ b/src/vistir/__init__.py
@@ -61,4 +61,8 @@
     "take",
     "chunked",
     "divide",
+    "StringIO",
+    "get_wrapped_stream",
+    "StreamWrapper",
+    "replaced_stream"
 ]