Sets are marshalable.
diff --git a/Doc/lib/libmarshal.tex b/Doc/lib/libmarshal.tex
index bf3828f..e1e80f6 100644
--- a/Doc/lib/libmarshal.tex
+++ b/Doc/lib/libmarshal.tex
@@ -43,7 +43,7 @@
whose value is independent from a particular invocation of Python can
be written and read by this module. The following types are supported:
\code{None}, integers, long integers, floating point numbers,
-strings, Unicode objects, tuples, lists, dictionaries, and code
+strings, Unicode objects, tuples, lists, sets, dictionaries, and code
objects, where it should be understood that tuples, lists and
dictionaries are only supported as long as the values contained
therein are themselves supported; and recursive lists and dictionaries