diff --git a/polygerrit-ui/app/embed/diff/gr-diff/gr-diff-line.ts b/polygerrit-ui/app/embed/diff/gr-diff/gr-diff-line.ts
index 2927101..44cac4d 100644
--- a/polygerrit-ui/app/embed/diff/gr-diff/gr-diff-line.ts
+++ b/polygerrit-ui/app/embed/diff/gr-diff/gr-diff-line.ts
@@ -1,18 +1,7 @@
 /**
  * @license
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed 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.
+ * Copyright 2016 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 import {
diff --git a/polygerrit-ui/app/embed/diff/gr-diff/gr-diff-utils.ts b/polygerrit-ui/app/embed/diff/gr-diff/gr-diff-utils.ts
index 182d48e..092aa03 100644
--- a/polygerrit-ui/app/embed/diff/gr-diff/gr-diff-utils.ts
+++ b/polygerrit-ui/app/embed/diff/gr-diff/gr-diff-utils.ts
@@ -1,18 +1,7 @@
 /**
  * @license
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed 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.
+ * Copyright 2020 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
  */
 import {BlameInfo, CommentRange} from '../../../types/common';
 import {FILE, LineNumber} from './gr-diff-line';
diff --git a/polygerrit-ui/app/embed/diff/gr-diff/gr-diff.ts b/polygerrit-ui/app/embed/diff/gr-diff/gr-diff.ts
index 27952d3..31613be 100644
--- a/polygerrit-ui/app/embed/diff/gr-diff/gr-diff.ts
+++ b/polygerrit-ui/app/embed/diff/gr-diff/gr-diff.ts
@@ -1,18 +1,7 @@
 /**
  * @license
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed 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.
+ * Copyright 2015 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
  */
 import '../../../styles/shared-styles';
 import '../../../elements/shared/gr-button/gr-button';
diff --git a/polygerrit-ui/app/embed/diff/gr-diff/gr-diff_html.ts b/polygerrit-ui/app/embed/diff/gr-diff/gr-diff_html.ts
index a1082f9..87d3e97 100644
--- a/polygerrit-ui/app/embed/diff/gr-diff/gr-diff_html.ts
+++ b/polygerrit-ui/app/embed/diff/gr-diff/gr-diff_html.ts
@@ -1,18 +1,7 @@
 /**
  * @license
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed 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.
+ * Copyright 2020 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
  */
 import {html} from '@polymer/polymer/lib/utils/html-tag';