diff --git a/schema/mappings.json b/schema/mappings.json
index c887484..c4150c0 100644
--- a/schema/mappings.json
+++ b/schema/mappings.json
@@ -54,6 +54,10 @@
       "type": "integer",
       "index": false
     },
+    "pages": {
+      "type": "integer",
+      "index": false
+    },
     "mtime": {
       "type": "integer"
     },