diff --git a/bigbook.typ b/bigbook.typ
index 726535d..65a20c0 100644
--- a/bigbook.typ
+++ b/bigbook.typ
@@ -57,5 +57,7 @@
 
 #part[Oblivious RAM]
 
+#part[Obfuscation]
+
 #part[Others]
 #chapter("src/cq.typ")