Satisfy the Rat
diff --git a/.ratignore b/.ratignore
index 2d1dedc..05201d1 100644
--- a/.ratignore
+++ b/.ratignore
@@ -11,6 +11,7 @@
package\.json
repolinter\.json
tsconfig(\.\w+)?\.json
+typedoc\.json
yarn\.lock
CODE_OF_CONDUCT\.md
DISCLAIMER-WIP
diff --git a/packages/dom/@types/optimal-select/index.d.ts b/packages/dom/@types/optimal-select/index.d.ts
index 90eb3f4..a5364fd 100644
--- a/packages/dom/@types/optimal-select/index.d.ts
+++ b/packages/dom/@types/optimal-select/index.d.ts
@@ -1,3 +1,23 @@
+/**
+ * @license
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
// Partial declaration, just to cover the pieces we need.
declare module 'optimal-select' {
export default function optimalSelect(
