diff --git a/BUILD.gn b/BUILD.gn
index b8304d45..18aee987 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1,5 +1,5 @@
-# Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
-# Copyright (c) 2020-2021, Huawei Device Co., Ltd. All rights reserved.
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without modification,
 # are permitted provided that the following conditions are met:
diff --git a/components/backtrace/BUILD.gn b/components/backtrace/BUILD.gn
index 9d1dc2b1..22e3a48d 100644
--- a/components/backtrace/BUILD.gn
+++ b/components/backtrace/BUILD.gn
@@ -1,5 +1,5 @@
-# Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
-# Copyright (c) 2020-2021, Huawei Device Co., Ltd. All rights reserved.
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without modification,
 # are permitted provided that the following conditions are met:
diff --git a/components/cppsupport/BUILD.gn b/components/cppsupport/BUILD.gn
index 2cb08a28..497ec40c 100644
--- a/components/cppsupport/BUILD.gn
+++ b/components/cppsupport/BUILD.gn
@@ -1,5 +1,5 @@
-# Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
-# Copyright (c) 2020-2021, Huawei Device Co., Ltd. All rights reserved.
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without modification,
 # are permitted provided that the following conditions are met:
diff --git a/components/cpup/BUILD.gn b/components/cpup/BUILD.gn
index bec51891..cd5693b0 100644
--- a/components/cpup/BUILD.gn
+++ b/components/cpup/BUILD.gn
@@ -1,5 +1,5 @@
-# Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
-# Copyright (c) 2020-2021, Huawei Device Co., Ltd. All rights reserved.
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without modification,
 # are permitted provided that the following conditions are met:
diff --git a/components/exchook/BUILD.gn b/components/exchook/BUILD.gn
index fc93d9de..bbd45a1b 100644
--- a/components/exchook/BUILD.gn
+++ b/components/exchook/BUILD.gn
@@ -1,5 +1,5 @@
-# Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
-# Copyright (c) 2020-2021, Huawei Device Co., Ltd. All rights reserved.
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without modification,
 # are permitted provided that the following conditions are met:
diff --git a/components/fs/BUILD.gn b/components/fs/BUILD.gn
index 7a7401c4..1173aa9f 100644
--- a/components/fs/BUILD.gn
+++ b/components/fs/BUILD.gn
@@ -1,5 +1,5 @@
-# Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
-# Copyright (c) 2020-2021, Huawei Device Co., Ltd. All rights reserved.
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without modification,
 # are permitted provided that the following conditions are met:
diff --git a/components/fs/fatfs/BUILD.gn b/components/fs/fatfs/BUILD.gn
index 411fdf32..7be3db52 100644
--- a/components/fs/fatfs/BUILD.gn
+++ b/components/fs/fatfs/BUILD.gn
@@ -1,5 +1,5 @@
-# Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
-# Copyright (c) 2020-2021, Huawei Device Co., Ltd. All rights reserved.
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without modification,
 # are permitted provided that the following conditions are met:
diff --git a/components/fs/littlefs/BUILD.gn b/components/fs/littlefs/BUILD.gn
index f3d8c9ea..fbd76cc6 100644
--- a/components/fs/littlefs/BUILD.gn
+++ b/components/fs/littlefs/BUILD.gn
@@ -1,5 +1,5 @@
-# Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
-# Copyright (c) 2020-2021, Huawei Device Co., Ltd. All rights reserved.
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without modification,
 # are permitted provided that the following conditions are met:
diff --git a/kal/BUILD.gn b/kal/BUILD.gn
index 97dc7381..da59f5a6 100644
--- a/kal/BUILD.gn
+++ b/kal/BUILD.gn
@@ -1,5 +1,5 @@
-# Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
-# Copyright (c) 2020-2021, Huawei Device Co., Ltd. All rights reserved.
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without modification,
 # are permitted provided that the following conditions are met:
diff --git a/kal/cmsis/BUILD.gn b/kal/cmsis/BUILD.gn
index 861efb9f..4b6516f9 100644
--- a/kal/cmsis/BUILD.gn
+++ b/kal/cmsis/BUILD.gn
@@ -1,5 +1,5 @@
-# Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
-# Copyright (c) 2020-2021, Huawei Device Co., Ltd. All rights reserved.
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without modification,
 # are permitted provided that the following conditions are met:
diff --git a/kal/posix/BUILD.gn b/kal/posix/BUILD.gn
index cc8d577b..c3e8235c 100644
--- a/kal/posix/BUILD.gn
+++ b/kal/posix/BUILD.gn
@@ -1,5 +1,5 @@
-# Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
-# Copyright (c) 2020-2021, Huawei Device Co., Ltd. All rights reserved.
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without modification,
 # are permitted provided that the following conditions are met:
diff --git a/kernel/BUILD.gn b/kernel/BUILD.gn
index 742da8b1..0eb0b54c 100644
--- a/kernel/BUILD.gn
+++ b/kernel/BUILD.gn
@@ -1,5 +1,5 @@
-# Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
-# Copyright (c) 2020-2021, Huawei Device Co., Ltd. All rights reserved.
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without modification,
 # are permitted provided that the following conditions are met:
diff --git a/kernel/arch/arm/cortex-m33/gcc/BUILD.gn b/kernel/arch/arm/cortex-m33/gcc/BUILD.gn
index ccda24e2..9e6f08d1 100644
--- a/kernel/arch/arm/cortex-m33/gcc/BUILD.gn
+++ b/kernel/arch/arm/cortex-m33/gcc/BUILD.gn
@@ -1,5 +1,5 @@
-# Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
-# Copyright (c) 2020-2021, Huawei Device Co., Ltd. All rights reserved.
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without modification,
 # are permitted provided that the following conditions are met:
diff --git a/kernel/arch/arm/cortex-m4/gcc/BUILD.gn b/kernel/arch/arm/cortex-m4/gcc/BUILD.gn
index 0f6717a0..01757ea5 100644
--- a/kernel/arch/arm/cortex-m4/gcc/BUILD.gn
+++ b/kernel/arch/arm/cortex-m4/gcc/BUILD.gn
@@ -1,5 +1,5 @@
-# Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
-# Copyright (c) 2020-2021, Huawei Device Co., Ltd. All rights reserved.
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without modification,
 # are permitted provided that the following conditions are met:
diff --git a/kernel/arch/arm/cortex-m4/gcc/los_exc.S b/kernel/arch/arm/cortex-m4/gcc/los_exc.S
index cfdf0fac..b2106500 100644
--- a/kernel/arch/arm/cortex-m4/gcc/los_exc.S
+++ b/kernel/arch/arm/cortex-m4/gcc/los_exc.S
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
+ * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
  * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
diff --git a/kernel/arch/arm/cortex-m7/gcc/BUILD.gn b/kernel/arch/arm/cortex-m7/gcc/BUILD.gn
index ccda24e2..9e6f08d1 100644
--- a/kernel/arch/arm/cortex-m7/gcc/BUILD.gn
+++ b/kernel/arch/arm/cortex-m7/gcc/BUILD.gn
@@ -1,5 +1,5 @@
-# Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
-# Copyright (c) 2020-2021, Huawei Device Co., Ltd. All rights reserved.
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without modification,
 # are permitted provided that the following conditions are met:
diff --git a/kernel/arch/risc-v/riscv32/gcc/BUILD.gn b/kernel/arch/risc-v/riscv32/gcc/BUILD.gn
index 3bd1a1d2..709a08e6 100644
--- a/kernel/arch/risc-v/riscv32/gcc/BUILD.gn
+++ b/kernel/arch/risc-v/riscv32/gcc/BUILD.gn
@@ -1,5 +1,5 @@
-# Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
-# Copyright (c) 2020-2021, Huawei Device Co., Ltd. All rights reserved.
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without modification,
 # are permitted provided that the following conditions are met:
diff --git a/utils/BUILD.gn b/utils/BUILD.gn
index 202eab8a..f23ddc0c 100644
--- a/utils/BUILD.gn
+++ b/utils/BUILD.gn
@@ -1,5 +1,5 @@
-# Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
-# Copyright (c) 2020-2021, Huawei Device Co., Ltd. All rights reserved.
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without modification,
 # are permitted provided that the following conditions are met: