- Issue #13703: oCERT-2011-003: add -R command-line option and PYTHONHASHSEED
  environment variable, to provide an opt-in way to protect against denial of
  service attacks due to hash collisions within the dict and set types.  Patch
  by David Malcolm, based on work by Victor Stinner.
diff --git a/Doc/library/sys.rst b/Doc/library/sys.rst
index f7a0a5d..76d84e4 100644
--- a/Doc/library/sys.rst
+++ b/Doc/library/sys.rst
@@ -289,6 +289,11 @@
    +------------------------------+------------------------------------------+
    | :const:`bytes_warning`       | -b                                       |
    +------------------------------+------------------------------------------+
+   +------------------------------+------------------------------------------+
+   | :const:`hash_randomization`  | -R                                       |
+   |                              |                                          |
+   |                              | .. versionadded:: 2.6.8                  |
+   +------------------------------+------------------------------------------+
 
    .. versionadded:: 2.6