diff --git a/lib/mix/tasks/pleroma/common.ex b/lib/mix/tasks/pleroma/common.ex
index 36432c291..48c0c1346 100644
--- a/lib/mix/tasks/pleroma/common.ex
+++ b/lib/mix/tasks/pleroma/common.ex
@@ -1,3 +1,7 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
 defmodule Mix.Tasks.Pleroma.Common do
   @doc "Common functions to be reused in mix tasks"
   def start_pleroma do
diff --git a/lib/mix/tasks/pleroma/instance.ex b/lib/mix/tasks/pleroma/instance.ex
index 02e1ce27d..1ef40671c 100644
--- a/lib/mix/tasks/pleroma/instance.ex
+++ b/lib/mix/tasks/pleroma/instance.ex
@@ -1,3 +1,7 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
 defmodule Mix.Tasks.Pleroma.Instance do
   use Mix.Task
   alias Mix.Tasks.Pleroma.Common
diff --git a/lib/mix/tasks/pleroma/relay.ex b/lib/mix/tasks/pleroma/relay.ex
index 03586d6c3..cbe23f82e 100644
--- a/lib/mix/tasks/pleroma/relay.ex
+++ b/lib/mix/tasks/pleroma/relay.ex
@@ -1,3 +1,7 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
 defmodule Mix.Tasks.Pleroma.Relay do
   use Mix.Task
   alias Pleroma.Web.ActivityPub.Relay
diff --git a/lib/mix/tasks/pleroma/uploads.ex b/lib/mix/tasks/pleroma/uploads.ex
index 63299b2ae..f0eb13e1a 100644
--- a/lib/mix/tasks/pleroma/uploads.ex
+++ b/lib/mix/tasks/pleroma/uploads.ex
@@ -1,3 +1,7 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
 defmodule Mix.Tasks.Pleroma.Uploads do
   use Mix.Task
   alias Pleroma.{Upload, Uploaders.Local}
diff --git a/lib/mix/tasks/pleroma/user.ex b/lib/mix/tasks/pleroma/user.ex
index 51086a443..217a52fdd 100644
--- a/lib/mix/tasks/pleroma/user.ex
+++ b/lib/mix/tasks/pleroma/user.ex
@@ -1,3 +1,7 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
 defmodule Mix.Tasks.Pleroma.User do
   use Mix.Task
   import Ecto.Changeset