diff --git a/config.json b/config.json
index 7dfbe78..966dd99 100644
--- a/config.json
+++ b/config.json
@@ -92,6 +92,15 @@
             "format": {"type": "unit", "args": ["pages"]},
             "sort": true
         },
+        {
+            "id": "categories",
+            "title": "Categories",
+            "type": ["string"],
+            "columnWidth": 128,
+            "filter": true,
+            "find": true,
+            "sort": true
+        },
         {
             "id": "description",
             "title": "Description",