Add entry for copy_reg module.
diff --git a/Doc/lib/libpython.tex b/Doc/lib/libpython.tex
index c58e320..902a092 100644
--- a/Doc/lib/libpython.tex
+++ b/Doc/lib/libpython.tex
@@ -24,6 +24,9 @@
\item[pickle]
--- Convert Python objects to streams of bytes and back.
+\item[copy_reg]
+--- Register \code{pickle} support functions.
+
\item[shelve]
--- Python object persistency.
diff --git a/Doc/libpython.tex b/Doc/libpython.tex
index c58e320..902a092 100644
--- a/Doc/libpython.tex
+++ b/Doc/libpython.tex
@@ -24,6 +24,9 @@
\item[pickle]
--- Convert Python objects to streams of bytes and back.
+\item[copy_reg]
+--- Register \code{pickle} support functions.
+
\item[shelve]
--- Python object persistency.