diff --git a/Doc/library/argparse.rst b/Doc/library/argparse.rst
index 8ae96311026f33..d463af1e02372b 100644
--- a/Doc/library/argparse.rst
+++ b/Doc/library/argparse.rst
@@ -1624,6 +1624,11 @@ argument::
 See also :ref:`the argparse howto on ambiguous arguments <specifying-ambiguous-arguments>`
 for more details.
 
+   .. versionchanged:: 3.14
+      Negative numbers in scientific notation (``-2.5e-6``), with underscores
+      (``-1_234.5``) and complex numbers (``-1.2e-3j``) are recognized as
+      negative numbers.
+
 .. _prefix-matching:
 
 Argument abbreviations (prefix matching)