diff --git a/Doc/library/argparse.rst b/Doc/library/argparse.rst
index 9709d7e4435770..6e3d0fea9ec9b0 100644
--- a/Doc/library/argparse.rst
+++ b/Doc/library/argparse.rst
@@ -1601,6 +1601,11 @@ argument::
 See also :ref:`the argparse howto on ambiguous arguments <specifying-ambiguous-arguments>`
 for more details.
 
+.. versionchanged:: 3.14
+   Negative-number matching was expanded to include numbers in scientific
+   notation (``-2.5e-6``), numbers containing underscores (``-1_234.5``),
+   and complex numbers (``-1.2e-3j``).
+
 .. _prefix-matching:
 
 Argument abbreviations (prefix matching)