diff --git a/lib/atom.js b/lib/atom.js
index 3a56c31..22be787 100644
--- a/lib/atom.js
+++ b/lib/atom.js
@@ -117,7 +117,7 @@ export function atom(channel, data) {
       if (datum.tags) {
         let offset = -1
         while (++offset < datum.tags.length) {
-          items.push(x('category', {term: String(datum.tags[offset])}))
+          children.push(x('category', {term: String(datum.tags[offset])}))
         }
       }
 
diff --git a/package.json b/package.json
index 514f8e3..f1f32d5 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "remark-cli": "^11.0.0",
     "remark-preset-wooorm": "^9.0.0",
     "type-coverage": "^2.0.0",
-    "typescript": "^4.0.0",
+    "typescript": "^5.0.0",
     "xast-util-to-xml": "^3.0.0",
     "xo": "^0.53.0"
   },
diff --git a/test.js b/test.js
index d0f8c04..081135f 100644
--- a/test.js
+++ b/test.js
@@ -1998,6 +1998,18 @@ test('atom', () => {
           name: 'title',
           attributes: {},
           children: [{type: 'text', value: 'c'}]
+        },
+        {
+          type: 'element',
+          name: 'category',
+          attributes: {term: 'x'},
+          children: []
+        },
+        {
+          type: 'element',
+          name: 'category',
+          attributes: {term: 'y'},
+          children: []
         }
       ]
     },