diff --git a/Doc/c-api/code.rst b/Doc/c-api/code.rst
index e2b0b23335e..7aa91ee84d2 100644
--- a/Doc/c-api/code.rst
+++ b/Doc/c-api/code.rst
@@ -40,6 +40,9 @@ bound into a function.
    :c:func:`PyCode_New` directly can bind you to a precise Python
    version since the definition of the bytecode changes often.
 
+   .. versionchanged:: 3.8
+      An extra parameter is required (*posonlyargcount*) to support :PEP:`570`.
+
    .. audit-event:: code.__new__ "code filename name argcount kwonlyargcount nlocals stacksize flags"
 
 .. c:function:: PyCodeObject* PyCode_NewEmpty(const char *filename, const char *funcname, int firstlineno)
diff --git a/Doc/whatsnew/3.8.rst b/Doc/whatsnew/3.8.rst
index 98f0c3474f2..76d00938dbe 100644
--- a/Doc/whatsnew/3.8.rst
+++ b/Doc/whatsnew/3.8.rst
@@ -1278,6 +1278,9 @@ Changes in the C API
 
   (Contributed by Antoine Pitrou in :issue:`32388`.)
 
+* The :c:func:`PyCode_New` has a new parameter in the second position (*posonlyargcount*)
+  to support :pep:`570`, indicating the number of positional-only arguments.
+
 
 CPython bytecode changes
 ------------------------