diff --git a/crates/matrix-sdk-ui/src/events.rs b/crates/matrix-sdk-ui/src/events.rs
index 628cd6655..96d804084 100644
--- a/crates/matrix-sdk-ui/src/events.rs
+++ b/crates/matrix-sdk-ui/src/events.rs
@@ -1,3 +1,17 @@
+// Copyright 2023 The Matrix.org Foundation C.I.C.
+//
+// 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.
+
 use ruma::{
     events::{
         EventContent, EventContentFromType, MessageLikeEventContent, MessageLikeEventType,
diff --git a/crates/matrix-sdk-ui/src/timeline/event_item/content.rs b/crates/matrix-sdk-ui/src/timeline/event_item/content.rs
index 72b355497..1ded64ab4 100644
--- a/crates/matrix-sdk-ui/src/timeline/event_item/content.rs
+++ b/crates/matrix-sdk-ui/src/timeline/event_item/content.rs
@@ -1,3 +1,17 @@
+// Copyright 2023 The Matrix.org Foundation C.I.C.
+//
+// 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.
+
 use std::{fmt, ops::Deref, sync::Arc};
 
 use imbl::{vector, Vector};
diff --git a/crates/matrix-sdk-ui/src/timeline/event_item/local.rs b/crates/matrix-sdk-ui/src/timeline/event_item/local.rs
index 44058792e..727c39752 100644
--- a/crates/matrix-sdk-ui/src/timeline/event_item/local.rs
+++ b/crates/matrix-sdk-ui/src/timeline/event_item/local.rs
@@ -1,3 +1,17 @@
+// Copyright 2023 The Matrix.org Foundation C.I.C.
+//
+// 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.
+
 use ruma::{EventId, OwnedTransactionId};
 
 use super::EventSendState;
diff --git a/crates/matrix-sdk-ui/src/timeline/event_item/remote.rs b/crates/matrix-sdk-ui/src/timeline/event_item/remote.rs
index 411cf0087..637a0f4e7 100644
--- a/crates/matrix-sdk-ui/src/timeline/event_item/remote.rs
+++ b/crates/matrix-sdk-ui/src/timeline/event_item/remote.rs
@@ -1,3 +1,17 @@
+// Copyright 2023 The Matrix.org Foundation C.I.C.
+//
+// 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.
+
 use std::fmt;
 
 use indexmap::IndexMap;