diff --git a/arrow-buffer/src/buffer/size.rs b/arrow-buffer/src/buffer/size.rs
index 9d2e5889ca1c..fdb75953cf73 100644
--- a/arrow-buffer/src/buffer/size.rs
+++ b/arrow-buffer/src/buffer/size.rs
@@ -1,3 +1,20 @@
+// 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.
+
 use std::ops::Deref;
 use crate::{ArrowNativeType, MutableBuffer, ScalarBuffer};
 
diff --git a/arrow-data/src/equal/list_view.rs b/arrow-data/src/equal/list_view.rs
index 6e738bc54552..1b0dc6619d00 100644
--- a/arrow-data/src/equal/list_view.rs
+++ b/arrow-data/src/equal/list_view.rs
@@ -1,3 +1,20 @@
+// 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.
+
 use num::Integer;
 use arrow_buffer::ArrowNativeType;
 use crate::ArrayData;