diff --git a/impl/elixir/lib/mix/tasks/vsh.daemon.ex b/impl/elixir/lib/mix/tasks/vsh.daemon.ex
index 59a0a855..e8efd7d2 100644
--- a/impl/elixir/lib/mix/tasks/vsh.daemon.ex
+++ b/impl/elixir/lib/mix/tasks/vsh.daemon.ex
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# Copyright (c) Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
 
 defmodule Mix.Tasks.Vsh.Daemon do
   @moduledoc """
diff --git a/impl/elixir/lib/vsh.ex b/impl/elixir/lib/vsh.ex
index 9d1a22bb..ce3dce58 100644
--- a/impl/elixir/lib/vsh.ex
+++ b/impl/elixir/lib/vsh.ex
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# Copyright (c) Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
 
 defmodule VSH do
   @moduledoc """
diff --git a/impl/elixir/lib/vsh/application.ex b/impl/elixir/lib/vsh/application.ex
index 741ef8e0..59d25900 100644
--- a/impl/elixir/lib/vsh/application.ex
+++ b/impl/elixir/lib/vsh/application.ex
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# Copyright (c) Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
 
 defmodule VSH.Application do
   @moduledoc """
diff --git a/impl/elixir/lib/vsh/daemon.ex b/impl/elixir/lib/vsh/daemon.ex
index b529fd31..777f8a53 100644
--- a/impl/elixir/lib/vsh/daemon.ex
+++ b/impl/elixir/lib/vsh/daemon.ex
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# Copyright (c) Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
 
 defmodule VSH.Daemon do
   @moduledoc """
diff --git a/impl/elixir/lib/vsh/filesystem.ex b/impl/elixir/lib/vsh/filesystem.ex
index 4f1aaf3b..07f98978 100644
--- a/impl/elixir/lib/vsh/filesystem.ex
+++ b/impl/elixir/lib/vsh/filesystem.ex
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: MPL-2.0
+# Copyright (c) Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
 defmodule VSH.Filesystem do
   @moduledoc """
   Valence Shell - Elixir Filesystem Operations
diff --git a/impl/elixir/lib/vsh/nif.ex b/impl/elixir/lib/vsh/nif.ex
index 012c3a16..7843220c 100644
--- a/impl/elixir/lib/vsh/nif.ex
+++ b/impl/elixir/lib/vsh/nif.ex
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# Copyright (c) Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
 
 defmodule VSH.NIF do
   @moduledoc """
diff --git a/impl/elixir/lib/vsh/secure_erase.ex b/impl/elixir/lib/vsh/secure_erase.ex
index 47bd7c63..66d09d83 100644
--- a/impl/elixir/lib/vsh/secure_erase.ex
+++ b/impl/elixir/lib/vsh/secure_erase.ex
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# Copyright (c) Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
 defmodule VSH.SecureErase do
   @moduledoc """
   Hardware-based secure erase for SSDs using NIST SP 800-88 Purge methods.
diff --git a/impl/elixir/lib/vsh/state.ex b/impl/elixir/lib/vsh/state.ex
index 54d0c092..726db7cd 100644
--- a/impl/elixir/lib/vsh/state.ex
+++ b/impl/elixir/lib/vsh/state.ex
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# Copyright (c) Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
 
 defmodule VSH.State do
   @moduledoc """
diff --git a/impl/elixir/mix.exs b/impl/elixir/mix.exs
index 8a5ed13d..f9d90f83 100644
--- a/impl/elixir/mix.exs
+++ b/impl/elixir/mix.exs
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# Copyright (c) Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
 
 defmodule VSH.MixProject do
   use Mix.Project
diff --git a/impl/elixir/test/test_helper.exs b/impl/elixir/test/test_helper.exs
index bfa29171..e0aebdc3 100644
--- a/impl/elixir/test/test_helper.exs
+++ b/impl/elixir/test/test_helper.exs
@@ -1,3 +1,4 @@
 # SPDX-License-Identifier: MPL-2.0
+# Copyright (c) Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
 
 ExUnit.start()
diff --git a/impl/elixir/test/vsh_test.exs b/impl/elixir/test/vsh_test.exs
index e9dd3c89..fc10227e 100644
--- a/impl/elixir/test/vsh_test.exs
+++ b/impl/elixir/test/vsh_test.exs
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# Copyright (c) Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
 
 defmodule VSHTest do
   @moduledoc """