diff --git a/Doc/reference/simple_stmts.rst b/Doc/reference/simple_stmts.rst
index 93be327..f8ab2e9 100644
--- a/Doc/reference/simple_stmts.rst
+++ b/Doc/reference/simple_stmts.rst
@@ -874,8 +874,8 @@
 * blank lines, and
 * other future statements.
 
-The only feature in Python 3.7 that requires using the future statement is
-``annotations``.
+The only feature that requires using the future statement is
+``annotations`` (see :pep:`563`).
 
 All historical features enabled by the future statement are still recognized
 by Python 3.  The list includes ``absolute_import``, ``division``,