diff --git a/core/modules/aggregator/config/aggregator.schema.yml b/core/modules/aggregator/config/aggregator.schema.yml
new file mode 100644
index 0000000..c43dc23
--- /dev/null
+++ b/core/modules/aggregator/config/aggregator.schema.yml
@@ -0,0 +1,27 @@
+# Module settings
+aggregator.settings:
+  type: mapping
+  label: 'Aggregator settings'
+  mapping:
+    "fetcher":
+      type: string
+    "parser":
+      type: string
+    "processors":
+      type: string
+    "items":
+      type: mapping
+      mapping:
+        "allowed_html":
+          type: string
+        "teaser_length":
+          type:integer
+        "expire":
+          type:integer
+    "source":
+      type: mapping
+      mapping:
+        "list_max":
+          type: integer
+        "category_selector":
+            type: string