diff --git a/nmcli-cli-autoconnect-list b/nmcli-cli-autoconnect-list
index 0a80a6a..0fd5d77 100755
--- a/nmcli-cli-autoconnect-list
+++ b/nmcli-cli-autoconnect-list
@@ -1,11 +1,8 @@
 #!/bin/bash
+# SPDX-License-Identifier: MIT
+# SPDX-FileCopyrightText: Copyright 2019-2026 Jun Futagawa (jfut)
 #
 # nmcli-cli-autoconnect-list
-#
-# Copyright (c) 2019-2026 Jun Futagawa (jfut)
-#
-# This software is released under the MIT License.
-# http://opensource.org/licenses/mit-license.php
 
 VERSION="1.2.1"
 
diff --git a/nmcli-cli-autoconnect-set b/nmcli-cli-autoconnect-set
index 425f8c5..8944d55 100755
--- a/nmcli-cli-autoconnect-set
+++ b/nmcli-cli-autoconnect-set
@@ -1,11 +1,8 @@
 #!/bin/bash
+# SPDX-License-Identifier: MIT
+# SPDX-FileCopyrightText: Copyright 2019-2026 Jun Futagawa (jfut)
 #
 # nmcli-cli-autoconnect-set
-#
-# Copyright (c) 2019-2026 Jun Futagawa (jfut)
-#
-# This software is released under the MIT License.
-# http://opensource.org/licenses/mit-license.php
 
 VERSION="1.2.1"
 ECHO_OR_EXECUTE="echo"
diff --git a/nmcli-cli-bond-add b/nmcli-cli-bond-add
index 97bd4d0..07139ea 100755
--- a/nmcli-cli-bond-add
+++ b/nmcli-cli-bond-add
@@ -1,11 +1,8 @@
 #!/bin/bash
+# SPDX-License-Identifier: MIT
+# SPDX-FileCopyrightText: Copyright 2019-2026 Jun Futagawa (jfut)
 #
 # nmcli-cli-bond-add
-#
-# Copyright (c) 2019-2026 Jun Futagawa (jfut)
-#
-# This software is released under the MIT License.
-# http://opensource.org/licenses/mit-license.php
 
 VERSION="1.2.1"
 ECHO_OR_EXECUTE="echo"
diff --git a/nmcli-cli-bond-delete b/nmcli-cli-bond-delete
index 3f874cc..d3606ee 100755
--- a/nmcli-cli-bond-delete
+++ b/nmcli-cli-bond-delete
@@ -1,11 +1,8 @@
 #!/bin/bash
+# SPDX-License-Identifier: MIT
+# SPDX-FileCopyrightText: Copyright 2019-2026 Jun Futagawa (jfut)
 #
 # nmcli-cli-bond-delete
-#
-# Copyright (c) 2019-2026 Jun Futagawa (jfut)
-#
-# This software is released under the MIT License.
-# http://opensource.org/licenses/mit-license.php
 
 VERSION="1.2.1"
 ECHO_OR_EXECUTE="echo"
diff --git a/nmcli-cli-bridge-add b/nmcli-cli-bridge-add
index 7005719..aeed220 100755
--- a/nmcli-cli-bridge-add
+++ b/nmcli-cli-bridge-add
@@ -1,11 +1,8 @@
 #!/bin/bash
+# SPDX-License-Identifier: MIT
+# SPDX-FileCopyrightText: Copyright 2019-2026 Jun Futagawa (jfut)
 #
 # nmcli-cli-bridge-add
-#
-# Copyright (c) 2019-2026 Jun Futagawa (jfut)
-#
-# This software is released under the MIT License.
-# http://opensource.org/licenses/mit-license.php
 
 VERSION="1.2.1"
 ECHO_OR_EXECUTE="echo"
diff --git a/nmcli-cli-bridge-delete b/nmcli-cli-bridge-delete
index 533f194..fec0b9b 100755
--- a/nmcli-cli-bridge-delete
+++ b/nmcli-cli-bridge-delete
@@ -1,11 +1,8 @@
 #!/bin/bash
+# SPDX-License-Identifier: MIT
+# SPDX-FileCopyrightText: Copyright 2019-2026 Jun Futagawa (jfut)
 #
 # nmcli-cli-bridge-delete
-#
-# Copyright (c) 2019-2026 Jun Futagawa (jfut)
-#
-# This software is released under the MIT License.
-# http://opensource.org/licenses/mit-license.php
 
 VERSION="1.2.1"
 ECHO_OR_EXECUTE="echo"
diff --git a/nmcli-cli-device-name b/nmcli-cli-device-name
index 38d1001..09932a1 100755
--- a/nmcli-cli-device-name
+++ b/nmcli-cli-device-name
@@ -1,11 +1,8 @@
 #!/bin/bash
+# SPDX-License-Identifier: MIT
+# SPDX-FileCopyrightText: Copyright 2019-2026 Jun Futagawa (jfut)
 #
 # nmcli-cli-device-name
-#
-# Copyright (c) 2019-2026 Jun Futagawa (jfut)
-#
-# This software is released under the MIT License.
-# http://opensource.org/licenses/mit-license.php
 
 VERSION="1.2.1"
 ECHO_OR_EXECUTE="echo"
diff --git a/nmcli-cli-ipv4 b/nmcli-cli-ipv4
index c3b3e88..a139c83 100755
--- a/nmcli-cli-ipv4
+++ b/nmcli-cli-ipv4
@@ -1,11 +1,8 @@
 #!/bin/bash
+# SPDX-License-Identifier: MIT
+# SPDX-FileCopyrightText: Copyright 2019-2026 Jun Futagawa (jfut)
 #
 # nmcli-cli-ipv4
-#
-# Copyright (c) 2019-2026 Jun Futagawa (jfut)
-#
-# This software is released under the MIT License.
-# http://opensource.org/licenses/mit-license.php
 
 VERSION="1.2.1"
 ECHO_OR_EXECUTE="echo"
diff --git a/nmcli-cli-ipv4-copy b/nmcli-cli-ipv4-copy
index e24380d..eedceca 100755
--- a/nmcli-cli-ipv4-copy
+++ b/nmcli-cli-ipv4-copy
@@ -1,11 +1,8 @@
 #!/bin/bash
+# SPDX-License-Identifier: MIT
+# SPDX-FileCopyrightText: Copyright 2019-2026 Jun Futagawa (jfut)
 #
 # nmcli-cli-ipv4-copy
-#
-# Copyright (c) 2019-2026 Jun Futagawa (jfut)
-#
-# This software is released under the MIT License.
-# http://opensource.org/licenses/mit-license.php
 
 VERSION="1.2.1"
 ECHO_OR_EXECUTE="echo"
diff --git a/nmcli-cli-ipv6 b/nmcli-cli-ipv6
index 76e31ff..7f739cf 100755
--- a/nmcli-cli-ipv6
+++ b/nmcli-cli-ipv6
@@ -1,11 +1,8 @@
 #!/bin/bash
+# SPDX-License-Identifier: MIT
+# SPDX-FileCopyrightText: Copyright 2019-2026 Jun Futagawa (jfut)
 #
 # nmcli-cli-ipv6
-#
-# Copyright (c) 2019-2026 Jun Futagawa (jfut)
-#
-# This software is released under the MIT License.
-# http://opensource.org/licenses/mit-license.php
 
 VERSION="1.2.1"
 ECHO_OR_EXECUTE="echo"
diff --git a/nmcli-cli-ipv6-copy b/nmcli-cli-ipv6-copy
index 218e3f4..32d7002 100755
--- a/nmcli-cli-ipv6-copy
+++ b/nmcli-cli-ipv6-copy
@@ -1,11 +1,8 @@
 #!/bin/bash
+# SPDX-License-Identifier: MIT
+# SPDX-FileCopyrightText: Copyright 2019-2026 Jun Futagawa (jfut)
 #
 # nmcli-cli-ipv6-copy
-#
-# Copyright (c) 2019-2026 Jun Futagawa (jfut)
-#
-# This software is released under the MIT License.
-# http://opensource.org/licenses/mit-license.php
 
 VERSION="1.2.1"
 ECHO_OR_EXECUTE="echo"
diff --git a/nmcli-cli-restart b/nmcli-cli-restart
index 4abb86e..027fe00 100755
--- a/nmcli-cli-restart
+++ b/nmcli-cli-restart
@@ -1,11 +1,8 @@
 #!/bin/bash
+# SPDX-License-Identifier: MIT
+# SPDX-FileCopyrightText: Copyright 2019-2026 Jun Futagawa (jfut)
 #
 # nmcli-cli-restart
-#
-# Copyright (c) 2019-2026 Jun Futagawa (jfut)
-#
-# This software is released under the MIT License.
-# http://opensource.org/licenses/mit-license.php
 
 VERSION="1.2.1"
 ECHO_OR_EXECUTE="echo"
diff --git a/nmcli-cli-slave-list b/nmcli-cli-slave-list
index 6da92ed..dbd58da 100755
--- a/nmcli-cli-slave-list
+++ b/nmcli-cli-slave-list
@@ -1,11 +1,8 @@
 #!/bin/bash
+# SPDX-License-Identifier: MIT
+# SPDX-FileCopyrightText: Copyright 2019-2026 Jun Futagawa (jfut)
 #
 # nmcli-cli-slave-list
-#
-# Copyright (c) 2019-2026 Jun Futagawa (jfut)
-#
-# This software is released under the MIT License.
-# http://opensource.org/licenses/mit-license.php
 
 VERSION="1.2.1"
 
diff --git a/nmcli-cli-vlan-add b/nmcli-cli-vlan-add
index e92c775..9fbc04e 100755
--- a/nmcli-cli-vlan-add
+++ b/nmcli-cli-vlan-add
@@ -1,11 +1,8 @@
 #!/bin/bash
+# SPDX-License-Identifier: MIT
+# SPDX-FileCopyrightText: Copyright 2019-2026 Jun Futagawa (jfut)
 #
 # nmcli-cli-vlan-add
-#
-# Copyright (c) 2019-2026 Jun Futagawa (jfut)
-#
-# This software is released under the MIT License.
-# http://opensource.org/licenses/mit-license.php
 
 VERSION="1.2.1"
 ECHO_OR_EXECUTE="echo"
diff --git a/nmcli-cli-vlan-delete b/nmcli-cli-vlan-delete
index 94038a4..9f84ad1 100755
--- a/nmcli-cli-vlan-delete
+++ b/nmcli-cli-vlan-delete
@@ -1,11 +1,8 @@
 #!/bin/bash
+# SPDX-License-Identifier: MIT
+# SPDX-FileCopyrightText: Copyright 2019-2026 Jun Futagawa (jfut)
 #
 # nmcli-cli-vlan-delete
-#
-# Copyright (c) 2019-2026 Jun Futagawa (jfut)
-#
-# This software is released under the MIT License.
-# http://opensource.org/licenses/mit-license.php
 
 VERSION="1.2.1"
 ECHO_OR_EXECUTE="echo"