diff --git a/Doc/Makefile.deps b/Doc/Makefile.deps
index f1001b8b329..38707132080 100644
--- a/Doc/Makefile.deps
+++ b/Doc/Makefile.deps
@@ -195,6 +195,8 @@ LIBFILES= ../lib/lib.tex \
 	../lib/libchunk.tex \
 	../lib/libcodeop.tex \
 	../lib/libcurses.tex \
+	../lib/libmutex.tex \
+	../lib/libnis.tex \
 	../lib/libpipes.tex \
 	../lib/librlcompleter.tex \
 	../lib/libsched.tex \
diff --git a/Doc/lib/lib.tex b/Doc/lib/lib.tex
index 7d513718070..15535acb7a3 100644
--- a/Doc/lib/lib.tex
+++ b/Doc/lib/lib.tex
@@ -146,6 +146,7 @@ add new extensions to Python and how to embed it in other applications.
 \input{libfnmatch}
 \input{libshutil}
 \input{liblocale}
+\input{libmutex}
 
 \input{libsomeos}		% Optional Operating System Services
 \input{libsignal}
@@ -175,6 +176,7 @@ add new extensions to Python and how to embed it in other applications.
 \input{libpipes}
 \input{libposixfile}
 \input{libresource}
+\input{libnis}
 \input{libsyslog}
 \input{libpopen2}
 \input{libcommands}