diff --git a/book.json b/book.json
index 362822fb3..119463df0 100644
--- a/book.json
+++ b/book.json
@@ -84,7 +84,7 @@
         },
         "adsense": {
             "client": "ca-pub-4029167986768912",
-            "slot": "9942692211",
+            "slot": "2445941692",
             "format": "auto",
             "element": ".page-inner section",
             "position": "bottom"