diff --git a/clients/shell/src/chat/vdl/chat.vdl b/clients/shell/src/chat/vdl/chat.vdl
index d3922f8..d656207 100644
--- a/clients/shell/src/chat/vdl/chat.vdl
+++ b/clients/shell/src/chat/vdl/chat.vdl
@@ -1,3 +1,7 @@
+// Copyright 2015 The Vanadium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package vdl
 
 type Chat interface {
diff --git a/clients/web/css/compose.css b/clients/web/css/compose.css
index 37bf217..22770b2 100644
--- a/clients/web/css/compose.css
+++ b/clients/web/css/compose.css
@@ -1,3 +1,7 @@
+/* Copyright 2015 The Vanadium Authors. All rights reserved. */
+/* Use of this source code is governed by a BSD-style */
+/* license that can be found in the LICENSE file. */
+
 :root {
   --color-focus-border: #5677fc;
 }
diff --git a/clients/web/css/index.css b/clients/web/css/index.css
index ac6542f..2052703 100644
--- a/clients/web/css/index.css
+++ b/clients/web/css/index.css
@@ -1,3 +1,7 @@
+/* Copyright 2015 The Vanadium Authors. All rights reserved. */
+/* Use of this source code is governed by a BSD-style */
+/* license that can be found in the LICENSE file. */
+
 /* TODO(sadovsky): Maybe use https://www.npmjs.org/package/insert-css to import
    CSS for each UI component. But note, in that case we'd need to run rework on
    each file independently. */
diff --git a/clients/web/css/members.css b/clients/web/css/members.css
index 3932f16..19a483f 100644
--- a/clients/web/css/members.css
+++ b/clients/web/css/members.css
@@ -1,3 +1,7 @@
+/* Copyright 2015 The Vanadium Authors. All rights reserved. */
+/* Use of this source code is governed by a BSD-style */
+/* license that can be found in the LICENSE file. */
+
 :root {
   --color-status-active: #259b24;
 }
diff --git a/clients/web/css/messages.css b/clients/web/css/messages.css
index 41863e3..fc2faa8 100644
--- a/clients/web/css/messages.css
+++ b/clients/web/css/messages.css
@@ -1,3 +1,7 @@
+/* Copyright 2015 The Vanadium Authors. All rights reserved. */
+/* Use of this source code is governed by a BSD-style */
+/* license that can be found in the LICENSE file. */
+
 .messages {
   overflow-y: auto;
   padding: 8px;
diff --git a/clients/web/css/navbar.css b/clients/web/css/navbar.css
index 6789eaa..fcd325f 100644
--- a/clients/web/css/navbar.css
+++ b/clients/web/css/navbar.css
@@ -1,3 +1,7 @@
+/* Copyright 2015 The Vanadium Authors. All rights reserved. */
+/* Use of this source code is governed by a BSD-style */
+/* license that can be found in the LICENSE file. */
+
 .navbar {
   background-color: var(--color-background-dark);
   color: white;
diff --git a/markdown/markdown-preview.css b/markdown/markdown-preview.css
index 09a6264..0dbb5ed 100644
--- a/markdown/markdown-preview.css
+++ b/markdown/markdown-preview.css
@@ -1,3 +1,7 @@
+/* Copyright 2015 The Vanadium Authors. All rights reserved. */
+/* Use of this source code is governed by a BSD-style */
+/* license that can be found in the LICENSE file. */
+
 .markdown-preview {
   font-family: "Helvetica Neue", Helvetica, sans-serif;
   font-size: 14px;