diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index 275b2d390e7cf5..f666b34b66fb22 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -16,6 +16,8 @@ module.  For creating temporary files and directories see the :mod:`tempfile`
 module, and for high-level file and directory handling see the :mod:`shutil`
 module.
 
+**TEST PR**.
+
 Notes on the availability of these functions:
 
 * The design of all built-in operating system dependent modules of Python is