There are now sixteen isfoo functions.
diff --git a/Doc/library/inspect.rst b/Doc/library/inspect.rst
index 5ece3cd..58337f0 100644
--- a/Doc/library/inspect.rst
+++ b/Doc/library/inspect.rst
@@ -28,7 +28,7 @@
-----------------
The :func:`getmembers` function retrieves the members of an object such as a
-class or module. The fifteen functions whose names begin with "is" are mainly
+class or module. The sixteen functions whose names begin with "is" are mainly
provided as convenient choices for the second argument to :func:`getmembers`.
They also help you determine when you can expect to find the following special
attributes: