diff --git a/category-counts/main.ts b/category-counts/main.ts
index 2317a78..a5a1210 100644
--- a/category-counts/main.ts
+++ b/category-counts/main.ts
@@ -1,4 +1,4 @@
-import {bot, log} from "../botbase";
+import {bot, emailOnError, log} from "../botbase";
 import {ApiQueryCategoryInfoParams} from "types-mediawiki/api_params";
 import {ElasticDataStore} from "../elasticsearch";
 import {getKey, normalizeCategory} from "./util";
@@ -40,4 +40,12 @@ import {getKey, normalizeCategory} from "./util";
             }
         }
     }
-})();
+
+    // Backup data to NFS
+    process.chdir(__dirname);
+    fs.writeFileSync(
+        `backups/category-counts-backup-${new bot.Date().format('YYYY-MM-DD', 'utc')}.json`,
+        JSON.stringify(countStore.dump(), null, 2)
+    );
+
+})().catch(err => emailOnError(err, 'cat-counts'));
diff --git a/elasticsearch.ts b/elasticsearch.ts
index 405f2e7..1e56b69 100644
--- a/elasticsearch.ts
+++ b/elasticsearch.ts
@@ -62,4 +62,18 @@ export class ElasticDataStore {
             id: id
         });
     }
+    async dump() {
+        // XXX: Obviously there should be better ways to do this
+        const count = await elastic.search({
+            index: this.index,
+            size: 1
+        }).then(result => result.body.hits.total.value);
+
+        const hits = await elastic.search({
+            index: this.index,
+            size: count
+        }).then(result => result.body.hits.hits);
+
+        return Object.fromEntries(hits.map(hit => [hit._id, hit._source]));
+    }
 }