diff --git a/Doc/libpython.tex b/Doc/libpython.tex
index 6b7195a..5b3e7a9 100644
--- a/Doc/libpython.tex
+++ b/Doc/libpython.tex
@@ -12,6 +12,9 @@
 \item[types]
 --- Names for all built-in types.
 
+\item[UserDict, UserList]
+--- Class wrappers for dictionary and list objects.
+
 \item[traceback]
 --- Print or retrieve a stack traceback.