diff --git a/LICENSE b/LICENSE
index b67d90910..9d9266484 100644
--- a/LICENSE
+++ b/LICENSE
@@ -186,7 +186,7 @@ Apache License
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright {}
+   Copyright 2019 TiKV Project Authors.
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
diff --git a/benches/benches.rs b/benches/benches.rs
index b21fba329..913f5bed7 100644
--- a/benches/benches.rs
+++ b/benches/benches.rs
@@ -1,3 +1,5 @@
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
+
 #![allow(dead_code)] // Due to criterion we need this to avoid warnings.
 #![cfg_attr(feature = "cargo-clippy", allow(clippy::let_and_return))] // Benches often artificially return values. Allow it.
 
diff --git a/benches/suites/mod.rs b/benches/suites/mod.rs
index f6e36f7ef..dcfcb9f7d 100644
--- a/benches/suites/mod.rs
+++ b/benches/suites/mod.rs
@@ -1,3 +1,5 @@
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
+
 mod raft;
 pub use self::raft::*;
 mod raw_node;
diff --git a/benches/suites/progress.rs b/benches/suites/progress.rs
index ec20c602d..3a600b066 100644
--- a/benches/suites/progress.rs
+++ b/benches/suites/progress.rs
@@ -1,3 +1,5 @@
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
+
 use criterion::{Bencher, Criterion};
 use raft::Progress;
 
diff --git a/benches/suites/progress_set.rs b/benches/suites/progress_set.rs
index 2beea2a2e..b86ee457d 100644
--- a/benches/suites/progress_set.rs
+++ b/benches/suites/progress_set.rs
@@ -1,3 +1,5 @@
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
+
 use crate::DEFAULT_RAFT_SETS;
 use criterion::{Bencher, Criterion};
 use raft::{Progress, ProgressSet};
diff --git a/benches/suites/raft.rs b/benches/suites/raft.rs
index ee00d59b6..3d3fc5463 100644
--- a/benches/suites/raft.rs
+++ b/benches/suites/raft.rs
@@ -1,3 +1,5 @@
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
+
 use crate::DEFAULT_RAFT_SETS;
 use criterion::Criterion;
 use raft::{storage::MemStorage, Config, Raft};
diff --git a/benches/suites/raw_node.rs b/benches/suites/raw_node.rs
index 32e6a5833..83e69225a 100644
--- a/benches/suites/raw_node.rs
+++ b/benches/suites/raw_node.rs
@@ -1,3 +1,5 @@
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
+
 use criterion::{BatchSize, Bencher, BenchmarkId, Criterion, Throughput};
 use raft::eraftpb::{ConfState, Entry, Message, Snapshot, SnapshotMetadata};
 use raft::{storage::MemStorage, Config, RawNode};
diff --git a/examples/five_mem_node/main.rs b/examples/five_mem_node/main.rs
index a453d59c8..18c5ef3e7 100644
--- a/examples/five_mem_node/main.rs
+++ b/examples/five_mem_node/main.rs
@@ -1,15 +1,4 @@
-// Copyright 2019 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 #[macro_use]
 extern crate slog;
diff --git a/examples/single_mem_node/main.rs b/examples/single_mem_node/main.rs
index e4bb154b7..915fd1902 100644
--- a/examples/single_mem_node/main.rs
+++ b/examples/single_mem_node/main.rs
@@ -1,15 +1,4 @@
-// Copyright 2018 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 #[macro_use]
 extern crate slog;
diff --git a/harness/src/interface.rs b/harness/src/interface.rs
index 9f0a86e3c..c9cabbf2d 100644
--- a/harness/src/interface.rs
+++ b/harness/src/interface.rs
@@ -1,15 +1,4 @@
-// Copyright 2018 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2015 CoreOS, Inc.
 //
diff --git a/harness/src/lib.rs b/harness/src/lib.rs
index 6ae13fbf4..7d27a6cab 100644
--- a/harness/src/lib.rs
+++ b/harness/src/lib.rs
@@ -1,15 +1,4 @@
-// Copyright 2018 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2015 The etcd Authors
 //
diff --git a/harness/src/network.rs b/harness/src/network.rs
index 1598b3632..b7fa25fe9 100644
--- a/harness/src/network.rs
+++ b/harness/src/network.rs
@@ -1,15 +1,4 @@
-// Copyright 2018 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2015 CoreOS, Inc.
 //
diff --git a/harness/tests/failpoints_cases/mod.rs b/harness/tests/failpoints_cases/mod.rs
index 116d91a1c..7908775ef 100644
--- a/harness/tests/failpoints_cases/mod.rs
+++ b/harness/tests/failpoints_cases/mod.rs
@@ -1,15 +1,4 @@
-// Copyright 2018 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 use crate::test_util::*;
 use fail;
diff --git a/harness/tests/integration_cases/mod.rs b/harness/tests/integration_cases/mod.rs
index 5d102cbc2..f25b2ab15 100644
--- a/harness/tests/integration_cases/mod.rs
+++ b/harness/tests/integration_cases/mod.rs
@@ -1,15 +1,4 @@
-// Copyright 2017 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 mod test_raft;
 mod test_raft_flow_control;
diff --git a/harness/tests/integration_cases/test_raft.rs b/harness/tests/integration_cases/test_raft.rs
index 357c773eb..1f2b08774 100644
--- a/harness/tests/integration_cases/test_raft.rs
+++ b/harness/tests/integration_cases/test_raft.rs
@@ -1,15 +1,4 @@
-// Copyright 2016 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2015 CoreOS, Inc.
 //
diff --git a/harness/tests/integration_cases/test_raft_flow_control.rs b/harness/tests/integration_cases/test_raft_flow_control.rs
index 0f03d6cff..d5171b391 100644
--- a/harness/tests/integration_cases/test_raft_flow_control.rs
+++ b/harness/tests/integration_cases/test_raft_flow_control.rs
@@ -1,15 +1,4 @@
-// Copyright 2016 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2015 CoreOS, Inc.
 //
diff --git a/harness/tests/integration_cases/test_raft_paper.rs b/harness/tests/integration_cases/test_raft_paper.rs
index 4625512db..f0b4baf69 100644
--- a/harness/tests/integration_cases/test_raft_paper.rs
+++ b/harness/tests/integration_cases/test_raft_paper.rs
@@ -1,15 +1,4 @@
-// Copyright 2016 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2015 CoreOS, Inc.
 //
diff --git a/harness/tests/integration_cases/test_raft_snap.rs b/harness/tests/integration_cases/test_raft_snap.rs
index 3d1931f40..adc768c1f 100644
--- a/harness/tests/integration_cases/test_raft_snap.rs
+++ b/harness/tests/integration_cases/test_raft_snap.rs
@@ -1,15 +1,4 @@
-// Copyright 2016 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2015 CoreOS, Inc.
 //
diff --git a/harness/tests/integration_cases/test_raw_node.rs b/harness/tests/integration_cases/test_raw_node.rs
index 65ebb101c..220da6b66 100644
--- a/harness/tests/integration_cases/test_raw_node.rs
+++ b/harness/tests/integration_cases/test_raw_node.rs
@@ -1,15 +1,4 @@
-// Copyright 2016 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2015 CoreOS, Inc.
 //
diff --git a/harness/tests/test_util/mod.rs b/harness/tests/test_util/mod.rs
index 663756de3..1c1e7fd21 100644
--- a/harness/tests/test_util/mod.rs
+++ b/harness/tests/test_util/mod.rs
@@ -1,15 +1,4 @@
-// Copyright 2018 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2015 CoreOS, Inc.
 //
diff --git a/harness/tests/tests.rs b/harness/tests/tests.rs
index 8feb67b8d..9b4bf90a2 100644
--- a/harness/tests/tests.rs
+++ b/harness/tests/tests.rs
@@ -1,15 +1,4 @@
-// Copyright 2017 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 #![cfg_attr(not(feature = "cargo-clippy"), allow(unknown_lints))]
 #![cfg_attr(feature = "failpoints", allow(dead_code, unused_imports))]
diff --git a/src/config.rs b/src/config.rs
index 44660915c..8d111a71c 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -1,15 +1,4 @@
-// Copyright 2016 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2015 The etcd Authors
 //
diff --git a/src/errors.rs b/src/errors.rs
index 569f98bf9..a9883351c 100644
--- a/src/errors.rs
+++ b/src/errors.rs
@@ -1,15 +1,4 @@
-// Copyright 2016 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 use protobuf::ProtobufError;
 use std::error;
diff --git a/src/lib.rs b/src/lib.rs
index a3349a780..4310c207c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,15 +1,4 @@
-// Copyright 2016 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2015 The etcd Authors
 //
diff --git a/src/log_unstable.rs b/src/log_unstable.rs
index 68a7e5480..96d423496 100644
--- a/src/log_unstable.rs
+++ b/src/log_unstable.rs
@@ -1,17 +1,6 @@
 //! A representation of not-yet-committed log entries and state.
 
-// Copyright 2016 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2015 The etcd Authors
 //
diff --git a/src/progress/inflights.rs b/src/progress/inflights.rs
index c5c2bf670..860a815d0 100644
--- a/src/progress/inflights.rs
+++ b/src/progress/inflights.rs
@@ -1,15 +1,4 @@
-// Copyright 2016 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2015 The etcd Authors
 //
diff --git a/src/progress/mod.rs b/src/progress/mod.rs
index 534632571..d4b4125b5 100644
--- a/src/progress/mod.rs
+++ b/src/progress/mod.rs
@@ -1,15 +1,4 @@
-// Copyright 2016 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2015 The etcd Authors
 //
diff --git a/src/progress/progress_set.rs b/src/progress/progress_set.rs
index f61c15b56..bff202643 100644
--- a/src/progress/progress_set.rs
+++ b/src/progress/progress_set.rs
@@ -1,15 +1,4 @@
-// Copyright 2016 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2015 The etcd Authors
 //
diff --git a/src/raft.rs b/src/raft.rs
index 343a9deef..34dec468d 100644
--- a/src/raft.rs
+++ b/src/raft.rs
@@ -1,15 +1,4 @@
-// Copyright 2016 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2015 The etcd Authors
 //
diff --git a/src/raft_log.rs b/src/raft_log.rs
index c6559adc5..86abc7795 100644
--- a/src/raft_log.rs
+++ b/src/raft_log.rs
@@ -1,15 +1,4 @@
-// Copyright 2016 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2015 The etcd Authors
 //
diff --git a/src/raw_node.rs b/src/raw_node.rs
index 1fb0773a9..67b0e4b9e 100644
--- a/src/raw_node.rs
+++ b/src/raw_node.rs
@@ -1,20 +1,4 @@
-//! The raw node of the raft module.
-//!
-//! This module contains the value types for the node and it's connection to other
-//! nodes but not the raft consensus itself. Generally, you'll interact with the
-//! RawNode first and use it to access the inner workings of the consensus protocol.
-// Copyright 2016 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2015 The etcd Authors
 //
@@ -30,6 +14,12 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//! The raw node of the raft module.
+//!
+//! This module contains the value types for the node and it's connection to other
+//! nodes but not the raft consensus itself. Generally, you'll interact with the
+//! RawNode first and use it to access the inner workings of the consensus protocol.
+
 use std::mem;
 
 use protobuf::Message as PbMessage;
diff --git a/src/read_only.rs b/src/read_only.rs
index 0f4679234..cc3e330da 100644
--- a/src/read_only.rs
+++ b/src/read_only.rs
@@ -1,15 +1,4 @@
-// Copyright 2016 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2016 The etcd Authors
 //
diff --git a/src/status.rs b/src/status.rs
index 263d8f0bb..b525ac7cb 100644
--- a/src/status.rs
+++ b/src/status.rs
@@ -1,15 +1,4 @@
-// Copyright 2016 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2015 The etcd Authors
 //
diff --git a/src/storage.rs b/src/storage.rs
index 62f47097b..c768b68a9 100644
--- a/src/storage.rs
+++ b/src/storage.rs
@@ -4,18 +4,7 @@
 //! Custom implementations of this are normal and this is likely to be a key integration
 //! point for your distributed storage.
 
-// Copyright 2016 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 // Copyright 2015 The etcd Authors
 //
diff --git a/src/util.rs b/src/util.rs
index 54926352e..4248643ee 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -1,18 +1,7 @@
 //! This module contains a collection of various tools to use to manipulate
 //! and control messages and data associated with raft.
 
-// Copyright 2017 PingCAP, Inc.
-//
-// 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,
-// See the License for the specific language governing permissions and
-// limitations under the License.
+// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
 
 use slog::{OwnedKVList, Record, KV};
 use std::fmt;