Issue #4129: Belatedly document which C API functions had their argument(s) or
return type changed from int or int * to Py_ssize_t or Py_ssize_t * as this
might cause problems on 64-bit platforms.
diff --git a/Doc/c-api/arg.rst b/Doc/c-api/arg.rst
index e7d997f..db0c832 100644
--- a/Doc/c-api/arg.rst
+++ b/Doc/c-api/arg.rst
@@ -403,6 +403,10 @@
 
    .. versionadded:: 2.2
 
+   .. versionchanged:: 2.5
+      This function used an :ctype:`int` type for *min* and *max*. This might
+      require changes in your code for properly supporting 64-bit systems.
+
 
 .. cfunction:: PyObject* Py_BuildValue(const char *format, ...)