diff --git a/chapter_recurrent-neural-networks/index.md b/chapter_recurrent-neural-networks/index.md
index ff2e25549b233655810d7c60deb988176a68b40c..1072a2769a852387bad9339c222e9ae726788e28 100644
--- a/chapter_recurrent-neural-networks/index.md
+++ b/chapter_recurrent-neural-networks/index.md
@@ -17,5 +17,7 @@
    bptt
    gru-scratch
    lstm-scratch
+   deep-rnn
+   bi-rnn
    rnn-gluon
 ```