diff --git a/tests/samples/open.py b/tests/samples/open.py
index 22adbe9..56ff69d 100644
--- a/tests/samples/open.py
+++ b/tests/samples/open.py
@@ -3,7 +3,7 @@
 
 """
 <output>
-open.py:1: note: Revealed type is "io.TextIOWrapper[io._WrappedBuffer]"
-open.py:2: note: Revealed type is "io.BufferedReader"
+open.py:1: note: Revealed type is "_io.TextIOWrapper[_io._WrappedBuffer]"
+open.py:2: note: Revealed type is "_io.BufferedReader"
 </output>
 """