diff --git a/Dockerfile b/Dockerfile
index 2ff6349..ff2b5b0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,3 +1,11 @@
+# Copyright 2021 The terraform-docs Authors.
+#
+# Licensed under the MIT license (the "License"); you may not
+# use this file except in compliance with the License.
+#
+# You may obtain a copy of the License at the LICENSE file in
+# the root directory of this source tree.
+
 FROM golang:1.15.6-alpine AS builder
 
 RUN apk add --update --no-cache ca-certificates bash make gcc musl-dev git openssh wget curl
diff --git a/Makefile b/Makefile
index b0fe6c6..96f5709 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,11 @@
+# Copyright 2021 The terraform-docs Authors.
+#
+# Licensed under the MIT license (the "License"); you may not
+# use this file except in compliance with the License.
+#
+# You may obtain a copy of the License at the LICENSE file in
+# the root directory of this source tree.
+
 # Project variables
 NAME        := terraform-docs
 VENDOR      := terraform-docs
diff --git a/README.md b/README.md
index 82c2c13..0da0f75 100644
--- a/README.md
+++ b/README.md
@@ -93,4 +93,4 @@ This project was originally developed by [Segment](https://github.com/segmentio/
 
 ## License
 
-MIT License - Copyright (c) 2020 The terraform-docs Authors.
+MIT License - Copyright (c) 2021 The terraform-docs Authors.
diff --git a/cmd/asciidoc/asciidoc.go b/cmd/asciidoc/asciidoc.go
index f90e691..554f7fe 100644
--- a/cmd/asciidoc/asciidoc.go
+++ b/cmd/asciidoc/asciidoc.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package asciidoc
 
 import (
diff --git a/cmd/asciidoc/document/document.go b/cmd/asciidoc/document/document.go
index f3f7511..8c517be 100644
--- a/cmd/asciidoc/document/document.go
+++ b/cmd/asciidoc/document/document.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package document
 
 import (
diff --git a/cmd/asciidoc/table/table.go b/cmd/asciidoc/table/table.go
index dca6465..74cc6c8 100644
--- a/cmd/asciidoc/table/table.go
+++ b/cmd/asciidoc/table/table.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package table
 
 import (
diff --git a/cmd/completion/bash/bash.go b/cmd/completion/bash/bash.go
index 6afbaad..4961720 100644
--- a/cmd/completion/bash/bash.go
+++ b/cmd/completion/bash/bash.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package bash
 
 import (
diff --git a/cmd/completion/completion.go b/cmd/completion/completion.go
index 1dbbf07..1906804 100644
--- a/cmd/completion/completion.go
+++ b/cmd/completion/completion.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package completion
 
 import (
diff --git a/cmd/completion/zsh/zsh.go b/cmd/completion/zsh/zsh.go
index 7d9b3f1..131a1cd 100644
--- a/cmd/completion/zsh/zsh.go
+++ b/cmd/completion/zsh/zsh.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package zsh
 
 import (
diff --git a/cmd/json/json.go b/cmd/json/json.go
index 7ebf21d..5f27f17 100644
--- a/cmd/json/json.go
+++ b/cmd/json/json.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package json
 
 import (
diff --git a/cmd/markdown/document/document.go b/cmd/markdown/document/document.go
index b314379..621f959 100644
--- a/cmd/markdown/document/document.go
+++ b/cmd/markdown/document/document.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package document
 
 import (
diff --git a/cmd/markdown/markdown.go b/cmd/markdown/markdown.go
index afc7d7f..105cd23 100644
--- a/cmd/markdown/markdown.go
+++ b/cmd/markdown/markdown.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package markdown
 
 import (
diff --git a/cmd/markdown/table/table.go b/cmd/markdown/table/table.go
index fd4fc4a..269883f 100644
--- a/cmd/markdown/table/table.go
+++ b/cmd/markdown/table/table.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package table
 
 import (
diff --git a/cmd/pretty/pretty.go b/cmd/pretty/pretty.go
index edc606c..59a1b05 100644
--- a/cmd/pretty/pretty.go
+++ b/cmd/pretty/pretty.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package pretty
 
 import (
diff --git a/cmd/root.go b/cmd/root.go
index 874408d..12a064f 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package cmd
 
 import (
diff --git a/cmd/tfvars/hcl/hcl.go b/cmd/tfvars/hcl/hcl.go
index 311ac9e..926f5d8 100644
--- a/cmd/tfvars/hcl/hcl.go
+++ b/cmd/tfvars/hcl/hcl.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package hcl
 
 import (
diff --git a/cmd/tfvars/json/json.go b/cmd/tfvars/json/json.go
index 2f1adb5..00bf4a6 100644
--- a/cmd/tfvars/json/json.go
+++ b/cmd/tfvars/json/json.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package json
 
 import (
diff --git a/cmd/tfvars/tfvars.go b/cmd/tfvars/tfvars.go
index 0852749..4a6ea70 100644
--- a/cmd/tfvars/tfvars.go
+++ b/cmd/tfvars/tfvars.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package tfvars
 
 import (
diff --git a/cmd/toml/toml.go b/cmd/toml/toml.go
index c710cb2..9fc0c3f 100644
--- a/cmd/toml/toml.go
+++ b/cmd/toml/toml.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package toml
 
 import (
diff --git a/cmd/version/version.go b/cmd/version/version.go
index 6f0af88..b614843 100644
--- a/cmd/version/version.go
+++ b/cmd/version/version.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package version
 
 import (
diff --git a/cmd/xml/xml.go b/cmd/xml/xml.go
index 6fe7ab3..392214a 100644
--- a/cmd/xml/xml.go
+++ b/cmd/xml/xml.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package xml
 
 import (
diff --git a/cmd/yaml/yaml.go b/cmd/yaml/yaml.go
index e401b8c..40a66e7 100644
--- a/cmd/yaml/yaml.go
+++ b/cmd/yaml/yaml.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package yaml
 
 import (
diff --git a/internal/cli/annotations.go b/internal/cli/annotations.go
index a347790..6f0404c 100644
--- a/internal/cli/annotations.go
+++ b/internal/cli/annotations.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package cli
 
 // Annotations returns set of annotations for cobra.Commands,
diff --git a/internal/cli/annotations_test.go b/internal/cli/annotations_test.go
index d1d988b..bb67faa 100644
--- a/internal/cli/annotations_test.go
+++ b/internal/cli/annotations_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package cli
 
 import (
diff --git a/internal/cli/config.go b/internal/cli/config.go
index 2cbbe87..e2a82c3 100644
--- a/internal/cli/config.go
+++ b/internal/cli/config.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package cli
 
 import (
diff --git a/internal/cli/reader.go b/internal/cli/reader.go
index f03e8e8..5e50f2a 100644
--- a/internal/cli/reader.go
+++ b/internal/cli/reader.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package cli
 
 import (
diff --git a/internal/cli/reader_test.go b/internal/cli/reader_test.go
index 5e139c9..2f7e548 100644
--- a/internal/cli/reader_test.go
+++ b/internal/cli/reader_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package cli
 
 import (
diff --git a/internal/cli/run.go b/internal/cli/run.go
index eb2ddbf..c08914b 100644
--- a/internal/cli/run.go
+++ b/internal/cli/run.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package cli
 
 import (
diff --git a/internal/cli/util.go b/internal/cli/util.go
index b0b7528..31cc56d 100644
--- a/internal/cli/util.go
+++ b/internal/cli/util.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package cli
 
 func contains(list []string, name string) bool {
diff --git a/internal/cli/util_test.go b/internal/cli/util_test.go
index 82198c3..eced044 100644
--- a/internal/cli/util_test.go
+++ b/internal/cli/util_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package cli
 
 import (
diff --git a/internal/format/asciidoc_document.go b/internal/format/asciidoc_document.go
index 6e8aca0..1fed915 100644
--- a/internal/format/asciidoc_document.go
+++ b/internal/format/asciidoc_document.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/asciidoc_document_test.go b/internal/format/asciidoc_document_test.go
index 3dddd3c..225adb2 100644
--- a/internal/format/asciidoc_document_test.go
+++ b/internal/format/asciidoc_document_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/asciidoc_table.go b/internal/format/asciidoc_table.go
index e650bbe..8e4f4e5 100644
--- a/internal/format/asciidoc_table.go
+++ b/internal/format/asciidoc_table.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/asciidoc_table_test.go b/internal/format/asciidoc_table_test.go
index be81d81..5d5f587 100644
--- a/internal/format/asciidoc_table_test.go
+++ b/internal/format/asciidoc_table_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/factory.go b/internal/format/factory.go
index 6392f06..9537781 100644
--- a/internal/format/factory.go
+++ b/internal/format/factory.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/factory_test.go b/internal/format/factory_test.go
index a73ebde..191e436 100644
--- a/internal/format/factory_test.go
+++ b/internal/format/factory_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/json.go b/internal/format/json.go
index b43e4d8..0ffb636 100644
--- a/internal/format/json.go
+++ b/internal/format/json.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/json_test.go b/internal/format/json_test.go
index a1084a9..ceb4e72 100644
--- a/internal/format/json_test.go
+++ b/internal/format/json_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/markdown_document.go b/internal/format/markdown_document.go
index f97ef11..5a7e7fa 100644
--- a/internal/format/markdown_document.go
+++ b/internal/format/markdown_document.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/markdown_document_test.go b/internal/format/markdown_document_test.go
index a27326b..5caf97b 100644
--- a/internal/format/markdown_document_test.go
+++ b/internal/format/markdown_document_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/markdown_table.go b/internal/format/markdown_table.go
index ada670d..4a8f811 100644
--- a/internal/format/markdown_table.go
+++ b/internal/format/markdown_table.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/markdown_table_test.go b/internal/format/markdown_table_test.go
index 643bfe9..59d9307 100644
--- a/internal/format/markdown_table_test.go
+++ b/internal/format/markdown_table_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/pretty.go b/internal/format/pretty.go
index da29123..d7e5ed9 100644
--- a/internal/format/pretty.go
+++ b/internal/format/pretty.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/pretty_test.go b/internal/format/pretty_test.go
index 96e05d9..1c2b1ed 100644
--- a/internal/format/pretty_test.go
+++ b/internal/format/pretty_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/tfvars_hcl.go b/internal/format/tfvars_hcl.go
index 0e4ddf9..51ddd28 100644
--- a/internal/format/tfvars_hcl.go
+++ b/internal/format/tfvars_hcl.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/tfvars_hcl_test.go b/internal/format/tfvars_hcl_test.go
index 7c08490..5c5e1d2 100644
--- a/internal/format/tfvars_hcl_test.go
+++ b/internal/format/tfvars_hcl_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/tfvars_json.go b/internal/format/tfvars_json.go
index 40f2adf..0bbbdda 100644
--- a/internal/format/tfvars_json.go
+++ b/internal/format/tfvars_json.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/tfvars_json_test.go b/internal/format/tfvars_json_test.go
index 858ee98..61c4550 100644
--- a/internal/format/tfvars_json_test.go
+++ b/internal/format/tfvars_json_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/toml.go b/internal/format/toml.go
index f8ebc73..6107021 100644
--- a/internal/format/toml.go
+++ b/internal/format/toml.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/toml_test.go b/internal/format/toml_test.go
index bc53aa3..211433a 100644
--- a/internal/format/toml_test.go
+++ b/internal/format/toml_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/util.go b/internal/format/util.go
index 7d2159e..89ad9c4 100644
--- a/internal/format/util.go
+++ b/internal/format/util.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/util_test.go b/internal/format/util_test.go
index d7c8e8c..960dab0 100644
--- a/internal/format/util_test.go
+++ b/internal/format/util_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/xml.go b/internal/format/xml.go
index 12c90a8..5c4c2e6 100644
--- a/internal/format/xml.go
+++ b/internal/format/xml.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/xml_test.go b/internal/format/xml_test.go
index cc31ba6..697e5c1 100644
--- a/internal/format/xml_test.go
+++ b/internal/format/xml_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/yaml.go b/internal/format/yaml.go
index 755a856..8c5cf4e 100644
--- a/internal/format/yaml.go
+++ b/internal/format/yaml.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/format/yaml_test.go b/internal/format/yaml_test.go
index 6cdabfa..79465f7 100644
--- a/internal/format/yaml_test.go
+++ b/internal/format/yaml_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package format
 
 import (
diff --git a/internal/reader/lines.go b/internal/reader/lines.go
index 4b4b4a2..b289fbe 100644
--- a/internal/reader/lines.go
+++ b/internal/reader/lines.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package reader
 
 import (
diff --git a/internal/reader/lines_test.go b/internal/reader/lines_test.go
index adc16c3..27a246e 100644
--- a/internal/reader/lines_test.go
+++ b/internal/reader/lines_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package reader
 
 import (
diff --git a/internal/terraform/doc.go b/internal/terraform/doc.go
index d87ef35..015a6db 100644
--- a/internal/terraform/doc.go
+++ b/internal/terraform/doc.go
@@ -1,2 +1,12 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 // Package terraform is the representation of a Terraform Module
 package terraform
diff --git a/internal/terraform/input.go b/internal/terraform/input.go
index ef7c8e0..338f134 100644
--- a/internal/terraform/input.go
+++ b/internal/terraform/input.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package terraform
 
 import (
diff --git a/internal/terraform/input_test.go b/internal/terraform/input_test.go
index 0fa6e64..7336707 100644
--- a/internal/terraform/input_test.go
+++ b/internal/terraform/input_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package terraform
 
 import (
diff --git a/internal/terraform/module.go b/internal/terraform/module.go
index a4e5401..80106bc 100644
--- a/internal/terraform/module.go
+++ b/internal/terraform/module.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package terraform
 
 import (
diff --git a/internal/terraform/module_test.go b/internal/terraform/module_test.go
index 7c01f36..b4d8b90 100644
--- a/internal/terraform/module_test.go
+++ b/internal/terraform/module_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package terraform
 
 import (
diff --git a/internal/terraform/options.go b/internal/terraform/options.go
index 637e237..da8b109 100644
--- a/internal/terraform/options.go
+++ b/internal/terraform/options.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package terraform
 
 import (
diff --git a/internal/terraform/options_test.go b/internal/terraform/options_test.go
index 739dd82..e13afa6 100644
--- a/internal/terraform/options_test.go
+++ b/internal/terraform/options_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package terraform
 
 import (
diff --git a/internal/terraform/output.go b/internal/terraform/output.go
index 2e51ff4..ed1e083 100644
--- a/internal/terraform/output.go
+++ b/internal/terraform/output.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package terraform
 
 import (
diff --git a/internal/terraform/output_test.go b/internal/terraform/output_test.go
index 53665a0..ebcf015 100644
--- a/internal/terraform/output_test.go
+++ b/internal/terraform/output_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package terraform
 
 import (
diff --git a/internal/terraform/position.go b/internal/terraform/position.go
index fcb6775..c36cc71 100644
--- a/internal/terraform/position.go
+++ b/internal/terraform/position.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package terraform
 
 // Position represents position of Terraform input or output in a file.
diff --git a/internal/terraform/provider.go b/internal/terraform/provider.go
index 659e68b..b432b55 100644
--- a/internal/terraform/provider.go
+++ b/internal/terraform/provider.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package terraform
 
 import (
diff --git a/internal/terraform/provider_test.go b/internal/terraform/provider_test.go
index 74bb40c..2ebd21b 100644
--- a/internal/terraform/provider_test.go
+++ b/internal/terraform/provider_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package terraform
 
 import (
diff --git a/internal/terraform/requirement.go b/internal/terraform/requirement.go
index 2abd303..1d58aea 100644
--- a/internal/terraform/requirement.go
+++ b/internal/terraform/requirement.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package terraform
 
 import (
diff --git a/internal/testutil/settings.go b/internal/testutil/settings.go
index 0334439..f2368d7 100644
--- a/internal/testutil/settings.go
+++ b/internal/testutil/settings.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package testutil
 
 import (
diff --git a/internal/testutil/testing.go b/internal/testutil/testing.go
index 720ee61..2af1b0d 100644
--- a/internal/testutil/testing.go
+++ b/internal/testutil/testing.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package testutil
 
 import (
diff --git a/internal/types/bool_test.go b/internal/types/bool_test.go
index 5f83428..991ac9c 100644
--- a/internal/types/bool_test.go
+++ b/internal/types/bool_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package types
 
 import (
diff --git a/internal/types/empty_test.go b/internal/types/empty_test.go
index 826ff8f..31d44e4 100644
--- a/internal/types/empty_test.go
+++ b/internal/types/empty_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package types
 
 import (
diff --git a/internal/types/list_test.go b/internal/types/list_test.go
index 5716672..27efeeb 100644
--- a/internal/types/list_test.go
+++ b/internal/types/list_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package types
 
 import (
diff --git a/internal/types/map_test.go b/internal/types/map_test.go
index 8b59dbb..30a3f69 100644
--- a/internal/types/map_test.go
+++ b/internal/types/map_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package types
 
 import (
diff --git a/internal/types/nil_test.go b/internal/types/nil_test.go
index 3861293..6408a9e 100644
--- a/internal/types/nil_test.go
+++ b/internal/types/nil_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package types
 
 import (
diff --git a/internal/types/number_test.go b/internal/types/number_test.go
index f0742b3..58e1f1b 100644
--- a/internal/types/number_test.go
+++ b/internal/types/number_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package types
 
 import (
diff --git a/internal/types/string_test.go b/internal/types/string_test.go
index ea08cef..51629db 100644
--- a/internal/types/string_test.go
+++ b/internal/types/string_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package types
 
 import (
diff --git a/internal/types/types.go b/internal/types/types.go
index 856ca9c..c4aed2f 100644
--- a/internal/types/types.go
+++ b/internal/types/types.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package types
 
 import (
diff --git a/internal/types/types_test.go b/internal/types/types_test.go
index f9d61cf..9a44870 100644
--- a/internal/types/types_test.go
+++ b/internal/types/types_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package types
 
 import (
diff --git a/internal/version/version.go b/internal/version/version.go
index 7e66307..6258d62 100644
--- a/internal/version/version.go
+++ b/internal/version/version.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package version
 
 import (
diff --git a/main.go b/main.go
index 639a10c..b3c754f 100644
--- a/main.go
+++ b/main.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package main
 
 import (
diff --git a/pkg/print/doc.go b/pkg/print/doc.go
index 47e53ba..f47be4a 100644
--- a/pkg/print/doc.go
+++ b/pkg/print/doc.go
@@ -1,2 +1,12 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 // Package print provides a specific definition of a printer Format
 package print
diff --git a/pkg/print/print.go b/pkg/print/print.go
index ac0a40f..f7b741e 100644
--- a/pkg/print/print.go
+++ b/pkg/print/print.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package print
 
 import (
diff --git a/pkg/print/settings.go b/pkg/print/settings.go
index 78daed0..723cd49 100644
--- a/pkg/print/settings.go
+++ b/pkg/print/settings.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package print
 
 // Settings represents all settings
diff --git a/pkg/tmpl/doc.go b/pkg/tmpl/doc.go
index cbe4e15..c990363 100644
--- a/pkg/tmpl/doc.go
+++ b/pkg/tmpl/doc.go
@@ -1,2 +1,12 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 // Package tmpl provides templating functionality
 package tmpl
diff --git a/pkg/tmpl/sanitizer.go b/pkg/tmpl/sanitizer.go
index 54bcec9..209f2f1 100644
--- a/pkg/tmpl/sanitizer.go
+++ b/pkg/tmpl/sanitizer.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package tmpl
 
 import (
diff --git a/pkg/tmpl/sanitizer_test.go b/pkg/tmpl/sanitizer_test.go
index c9103ce..1c2208c 100644
--- a/pkg/tmpl/sanitizer_test.go
+++ b/pkg/tmpl/sanitizer_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package tmpl
 
 import (
diff --git a/pkg/tmpl/template.go b/pkg/tmpl/template.go
index 9c88755..18861dc 100644
--- a/pkg/tmpl/template.go
+++ b/pkg/tmpl/template.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package tmpl
 
 import (
diff --git a/pkg/tmpl/template_test.go b/pkg/tmpl/template_test.go
index 83716cc..4f48f34 100644
--- a/pkg/tmpl/template_test.go
+++ b/pkg/tmpl/template_test.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package tmpl
 
 import (
diff --git a/scripts/build/build-all-osarch.sh b/scripts/build/build-all-osarch.sh
index 20241b7..d82d855 100755
--- a/scripts/build/build-all-osarch.sh
+++ b/scripts/build/build-all-osarch.sh
@@ -1,4 +1,12 @@
 #!/usr/bin/env bash
+#
+# Copyright 2021 The terraform-docs Authors.
+#
+# Licensed under the MIT license (the "License"); you may not
+# use this file except in compliance with the License.
+#
+# You may obtain a copy of the License at the LICENSE file in
+# the root directory of this source tree.
 
 set -e
 
diff --git a/scripts/docs/generate.go b/scripts/docs/generate.go
index 15cf5b0..498937f 100644
--- a/scripts/docs/generate.go
+++ b/scripts/docs/generate.go
@@ -1,3 +1,13 @@
+/*
+Copyright 2021 The terraform-docs Authors.
+
+Licensed under the MIT license (the "License"); you may not
+use this file except in compliance with the License.
+
+You may obtain a copy of the License at the LICENSE file in
+the root directory of this source tree.
+*/
+
 package main
 
 import (
diff --git a/scripts/release/release-note.sh b/scripts/release/release-note.sh
index c8314c6..5a004fb 100755
--- a/scripts/release/release-note.sh
+++ b/scripts/release/release-note.sh
@@ -1,4 +1,12 @@
 #!/usr/bin/env bash
+#
+# Copyright 2021 The terraform-docs Authors.
+#
+# Licensed under the MIT license (the "License"); you may not
+# use this file except in compliance with the License.
+#
+# You may obtain a copy of the License at the LICENSE file in
+# the root directory of this source tree.
 
 set -o errexit
 set -o nounset
diff --git a/scripts/release/release.sh b/scripts/release/release.sh
index 18dfb71..5e62505 100755
--- a/scripts/release/release.sh
+++ b/scripts/release/release.sh
@@ -1,4 +1,12 @@
 #!/usr/bin/env bash
+#
+# Copyright 2021 The terraform-docs Authors.
+#
+# Licensed under the MIT license (the "License"); you may not
+# use this file except in compliance with the License.
+#
+# You may obtain a copy of the License at the LICENSE file in
+# the root directory of this source tree.
 
 set -o errexit
 set -o pipefail