Load docs for sets.py
diff --git a/Doc/lib/lib.tex b/Doc/lib/lib.tex
index 671c106..6b52d63 100644
--- a/Doc/lib/lib.tex
+++ b/Doc/lib/lib.tex
@@ -122,6 +122,7 @@
 \input{libbisect}
 \input{libheapq}
 \input{libarray}
+\input{libsets}
 \input{libcfgparser}
 \input{libfileinput}
 \input{libxreadlines}