diff --git a/build.sh b/build.sh
index 98e5624..2c8f6ec 100755
--- a/build.sh
+++ b/build.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 #
-# Copyright 2014-2016 Range Networks, Inc.
+# Copyright 2014-2021 Range Networks, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as published by
@@ -81,10 +81,10 @@ fi
 echo "# checking for a compatible build host"
 if hash lsb_release 2>/dev/null; then
 	ubuntu=`lsb_release -r -s`
-	if [ $ubuntu != "12.04" ]; then
-		echo "# - WARNING : dev-tools is currently only tested on Ubuntu 12.04, YMMV. Please open an issue if you've used it successfully on another version of Ubuntu."
+	if [ $ubuntu != "16.04" ]; then
+		echo "# - WARNING : dev-tools is currently only tested on Ubuntu 16.04, YMMV. Please open an issue if you've used it successfully on another version of Ubuntu."
 	else
-		echo "# - fully supported host detected: Ubuntu 12.04"
+		echo "# - fully supported host detected: Ubuntu 16.04"
 	fi
 else
 	echo "# - ERROR : Sorry, dev-tools currently only supports Ubuntu as the host OS. Please open an issue for your desired host."
diff --git a/clone.sh b/clone.sh
index f10b9d1..b5046c6 100755
--- a/clone.sh
+++ b/clone.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 #
-# Copyright 2014-2016 Range Networks, Inc.
+# Copyright 2014-2021 Range Networks, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as published by
diff --git a/common.source b/common.source
index 58ac488..95d5ab4 100644
--- a/common.source
+++ b/common.source
@@ -1,5 +1,5 @@
 #
-# Copyright 2014 Range Networks, Inc.
+# Copyright 2014-2021 Range Networks, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as published by
diff --git a/create.sh b/create.sh
index b88d72d..53b6b4f 100755
--- a/create.sh
+++ b/create.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 #
-# Copyright 2014 Range Networks, Inc.
+# Copyright 2014-2021 Range Networks, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as published by
diff --git a/delete.sh b/delete.sh
index 6ad7081..281ef03 100755
--- a/delete.sh
+++ b/delete.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 #
-# Copyright 2014 Range Networks, Inc.
+# Copyright 2014-2021 Range Networks, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as published by
diff --git a/pull.sh b/pull.sh
index 20684c8..9f332cc 100755
--- a/pull.sh
+++ b/pull.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 #
-# Copyright 2014 Range Networks, Inc.
+# Copyright 2014-2021 Range Networks, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as published by
diff --git a/rename.sh b/rename.sh
index d932e0e..60f2b5d 100755
--- a/rename.sh
+++ b/rename.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 #
-# Copyright 2014 Range Networks, Inc.
+# Copyright 2014-2021 Range Networks, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as published by
diff --git a/state.sh b/state.sh
index 5be2172..597b19e 100755
--- a/state.sh
+++ b/state.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 #
-# Copyright 2014 Range Networks, Inc.
+# Copyright 2014-2021 Range Networks, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as published by
diff --git a/switchto.sh b/switchto.sh
index bc21988..7351a90 100755
--- a/switchto.sh
+++ b/switchto.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 #
-# Copyright 2014-2016 Range Networks, Inc.
+# Copyright 2014-2021 Range Networks, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as published by