Add entries for tty module.
diff --git a/Doc/Makefile.deps b/Doc/Makefile.deps
index 7161c69..c5ffdd7 100644
--- a/Doc/Makefile.deps
+++ b/Doc/Makefile.deps
@@ -198,6 +198,7 @@
 	../lib/libpipes.tex \
 	../lib/librlcompleter.tex \
 	../lib/libstatvfs.tex \
+	../lib/libtty.tex \
 	../lib/libcfgparser.tex
 
 # LaTeX source files for Macintosh Library Modules.