diff --git a/.eslintrc b/.eslintrc
index 0adc5e30..486617bc 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -13,8 +13,19 @@
       "jsx": true
     }
   },
+  "plugins": [
+    "header"
+  ],
   "rules": {
-    "react/prop-types": "off"
+    "react/prop-types": "off",
+    "header/header": [2, "block", [
+      "*",
+      {"pattern": " * Copyright \\(c\\) \\d{4} BlockDev AG", "template": " * Copyright (c) 2020 BlockDev AG"},
+      " *",
+      " * This source code is licensed under the MIT license found in the",
+      " * LICENSE file in the root directory of this source tree.",
+      " "
+    ]]
   },
   "settings": {
     "react": {
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 00000000..953a98b7
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2020 BlockDev AG
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/package.json b/package.json
index 8fefb1ba..ebcd07af 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
     "email": "mysterium-dev@mysterium.network",
     "url": "https://mysterium.network/"
   },
-  "license": "GPL-3.0",
+  "license": "MIT",
   "scripts": {
     "lint": "eslint --ext .ts,.tsx src",
     "dev": "webpack --mode=development",
@@ -52,6 +52,7 @@
     "copy-webpack-plugin": "^5.1.1",
     "eslint": "^6.8.0",
     "eslint-config-prettier": "^6.10.0",
+    "eslint-plugin-header": "^3.0.0",
     "eslint-plugin-prettier": "^3.1.2",
     "eslint-plugin-react": "^7.19.0",
     "file-loader": "^5.0.2",
diff --git a/src/app.tsx b/src/app.tsx
index 79f675a4..91da2547 100644
--- a/src/app.tsx
+++ b/src/app.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import React from "react"
 import { observer } from "mobx-react-lite"
 import { useStores } from "./store"
diff --git a/src/config.ts b/src/config.ts
index 0ff2a15e..c9018895 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -1 +1,7 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 export const winSize = { width: 640, height: 582 }
diff --git a/src/connect-view.tsx b/src/connect-view.tsx
index 48b9dcf1..0ed7650f 100644
--- a/src/connect-view.tsx
+++ b/src/connect-view.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import { ScrollArea, View } from "@nodegui/react-nodegui"
 import { ProposalTable } from "./proposals/comp/proposal-table/proposal-table"
 import React from "react"
diff --git a/src/connection-active-view.tsx b/src/connection-active-view.tsx
index ef6926c4..87c05c5e 100644
--- a/src/connection-active-view.tsx
+++ b/src/connection-active-view.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import { Text, View } from "@nodegui/react-nodegui"
 import React from "react"
 import { winSize } from "./config"
diff --git a/src/connection/comp/connect-disconnect-button.tsx b/src/connection/comp/connect-disconnect-button.tsx
index d00e7789..dcb53c78 100644
--- a/src/connection/comp/connect-disconnect-button.tsx
+++ b/src/connection/comp/connect-disconnect-button.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import { View } from "@nodegui/react-nodegui"
 import { ConnectionStatus } from "mysterium-vpn-js"
 import React from "react"
diff --git a/src/connection/comp/connection-status-text.tsx b/src/connection/comp/connection-status-text.tsx
index e9d465cb..59058194 100644
--- a/src/connection/comp/connection-status-text.tsx
+++ b/src/connection/comp/connection-status-text.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import React from "react"
 import { Text } from "@nodegui/react-nodegui"
 import { useStores } from "../../store"
diff --git a/src/connection/comp/connection-status.tsx b/src/connection/comp/connection-status.tsx
index 236ead42..4ca9a932 100644
--- a/src/connection/comp/connection-status.tsx
+++ b/src/connection/comp/connection-status.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import React from "react"
 import { View } from "@nodegui/react-nodegui"
 import { useStores } from "../../store"
diff --git a/src/connection/store.ts b/src/connection/store.ts
index a8f7c597..8c7fb118 100644
--- a/src/connection/store.ts
+++ b/src/connection/store.ts
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import { action, observable, reaction, runInAction } from "mobx"
 import { RootStore } from "../store"
 import tequilapi from "../tequila"
diff --git a/src/daemon/store.ts b/src/daemon/store.ts
index 2c88bfcb..887cbf02 100644
--- a/src/daemon/store.ts
+++ b/src/daemon/store.ts
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import tequilapi from "../tequila"
 import { action, observable, reaction, when } from "mobx"
 import { supervisor } from "../supervisor/supervisor"
diff --git a/src/identity/store.ts b/src/identity/store.ts
index 9753f6ba..679b2b15 100644
--- a/src/identity/store.ts
+++ b/src/identity/store.ts
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import retry from "async-retry"
 import tequilapi from "../tequila"
 import { action, observable, reaction } from "mobx"
diff --git a/src/index.tsx b/src/index.tsx
index 0a8611de..09997a92 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import React from "react"
 import { Renderer } from "@nodegui/react-nodegui"
 import MainWindow from "./main-window"
diff --git a/src/location/comp/effective-location.tsx b/src/location/comp/effective-location.tsx
index b652c861..ffad87a1 100644
--- a/src/location/comp/effective-location.tsx
+++ b/src/location/comp/effective-location.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import React from "react"
 import { Text, View } from "@nodegui/react-nodegui"
 import { observer } from "mobx-react-lite"
diff --git a/src/location/comp/original-location.tsx b/src/location/comp/original-location.tsx
index 6dd45834..b65a5a34 100644
--- a/src/location/comp/original-location.tsx
+++ b/src/location/comp/original-location.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import React from "react"
 import { Text, View } from "@nodegui/react-nodegui"
 import { observer } from "mobx-react-lite"
diff --git a/src/location/countries.ts b/src/location/countries.ts
index 9d15c1d9..9a6fd6b2 100644
--- a/src/location/countries.ts
+++ b/src/location/countries.ts
@@ -1,5 +1,9 @@
-// base64 encoded 24px flags, originally from https://github.com/gosquared/flags (MIT)
-// https://github.com/AndrejsAbrickis/flag-icons/tree/master/src/flags (MIT)
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 const countries: { [key: string]: CountryType } = Object.freeze({
     af: {
         name: "Afghanistan",
diff --git a/src/main-window.tsx b/src/main-window.tsx
index ac5b521b..e5683b34 100644
--- a/src/main-window.tsx
+++ b/src/main-window.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import { hot, Window } from "@nodegui/react-nodegui"
 import React, { MutableRefObject, useCallback, useEffect, useRef } from "react"
 import { QIcon, QMainWindow, QStatusBar, WidgetEventTypes } from "@nodegui/nodegui"
diff --git a/src/node-launcher.ts b/src/node-launcher.ts
index 0766cbb0..82061b1e 100644
--- a/src/node-launcher.ts
+++ b/src/node-launcher.ts
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import * as path from "path"
 import { isDevelopment, isProduction } from "./utils/mode"
 
diff --git a/src/payment/rate.ts b/src/payment/rate.ts
index 798aadbc..a086f91f 100644
--- a/src/payment/rate.ts
+++ b/src/payment/rate.ts
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import { mystDisplay, pricePerGiB, pricePerMinute, Proposal as ProposalType } from "mysterium-vpn-js"
 
 export const timeRate = (p: ProposalType): number | undefined => {
diff --git a/src/proposals/comp/country-filter.tsx b/src/proposals/comp/country-filter.tsx
index 237dd385..e1f322a6 100644
--- a/src/proposals/comp/country-filter.tsx
+++ b/src/proposals/comp/country-filter.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import React from "react"
 import { useStores } from "../../store"
 import { Text, View } from "@nodegui/react-nodegui"
diff --git a/src/proposals/comp/proposal-table/header.tsx b/src/proposals/comp/proposal-table/header.tsx
index 9f9c4212..4dc078ce 100644
--- a/src/proposals/comp/proposal-table/header.tsx
+++ b/src/proposals/comp/proposal-table/header.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import React from "react"
 import { Text, View } from "@nodegui/react-nodegui"
 import { proposalsCellStyle } from "./style"
diff --git a/src/proposals/comp/proposal-table/proposal-table.tsx b/src/proposals/comp/proposal-table/proposal-table.tsx
index e3465a12..c80e4618 100644
--- a/src/proposals/comp/proposal-table/proposal-table.tsx
+++ b/src/proposals/comp/proposal-table/proposal-table.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import React from "react"
 import { useStores } from "../../../store"
 import { View } from "@nodegui/react-nodegui"
diff --git a/src/proposals/comp/proposal-table/proposal.tsx b/src/proposals/comp/proposal-table/proposal.tsx
index 0bb4566f..b941b309 100644
--- a/src/proposals/comp/proposal-table/proposal.tsx
+++ b/src/proposals/comp/proposal-table/proposal.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import { UIProposal } from "../../ui-proposal-type"
 import React from "react"
 import { Toggle } from "../../../ui-kit/toggle/toggle"
diff --git a/src/proposals/comp/proposal-table/style.tsx b/src/proposals/comp/proposal-table/style.tsx
index 52cc1f8f..b27c78df 100644
--- a/src/proposals/comp/proposal-table/style.tsx
+++ b/src/proposals/comp/proposal-table/style.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 export const proposalsCellStyle = `
 width: 100;
 `
diff --git a/src/proposals/comp/selected-proposal.tsx b/src/proposals/comp/selected-proposal.tsx
index 4a848f53..a394d961 100644
--- a/src/proposals/comp/selected-proposal.tsx
+++ b/src/proposals/comp/selected-proposal.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import React from "react"
 import { Text, View } from "@nodegui/react-nodegui"
 import { Proposal as ProposalType } from "mysterium-vpn-js/lib/proposal/proposal"
diff --git a/src/proposals/store.ts b/src/proposals/store.ts
index df3a2171..f0b9a03e 100644
--- a/src/proposals/store.ts
+++ b/src/proposals/store.ts
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import { action, computed, observable, reaction } from "mobx"
 import { RootStore } from "../store"
 import { DaemonStatusType } from "../daemon/store"
diff --git a/src/proposals/ui-proposal-type.ts b/src/proposals/ui-proposal-type.ts
index c9463793..435c39d7 100644
--- a/src/proposals/ui-proposal-type.ts
+++ b/src/proposals/ui-proposal-type.ts
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import { Proposal } from "mysterium-vpn-js"
 
 export interface UIProposal extends Proposal {
diff --git a/src/store.ts b/src/store.ts
index afc45425..0f7844d6 100644
--- a/src/store.ts
+++ b/src/store.ts
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import { DaemonStore } from "./daemon/store"
 import { ConnectionStore } from "./connection/store"
 import React from "react"
diff --git a/src/supervisor/supervisor.ts b/src/supervisor/supervisor.ts
index 5766c0e9..d4dd8416 100644
--- a/src/supervisor/supervisor.ts
+++ b/src/supervisor/supervisor.ts
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import * as net from "net"
 import { Socket } from "net"
 import * as os from "os"
diff --git a/src/tequila.ts b/src/tequila.ts
index db0ce449..a8b4407e 100644
--- a/src/tequila.ts
+++ b/src/tequila.ts
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import { TequilapiClient, TequilapiClientFactory } from "mysterium-vpn-js"
 
 const factory = new TequilapiClientFactory("http://localhost:4050")
diff --git a/src/tray/quit.ts b/src/tray/quit.ts
index 09f84de6..24e97102 100644
--- a/src/tray/quit.ts
+++ b/src/tray/quit.ts
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import { QAction } from "@nodegui/nodegui"
 import { rootStore } from "../store"
 import { ConnectionStatus as ConnectionStatusType } from "mysterium-vpn-js/lib/connection/status"
diff --git a/src/tray/repair.ts b/src/tray/repair.ts
index 148b98a2..94a93dbd 100644
--- a/src/tray/repair.ts
+++ b/src/tray/repair.ts
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import { QAction } from "@nodegui/nodegui"
 import { rootStore } from "../store"
 import { ConnectionStatus as ConnectionStatusType } from "mysterium-vpn-js/lib/connection/status"
diff --git a/src/tray/tray.ts b/src/tray/tray.ts
index 2b1ab43c..fc511a65 100644
--- a/src/tray/tray.ts
+++ b/src/tray/tray.ts
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import { QIcon, QMenu, QSystemTrayIcon } from "@nodegui/nodegui"
 import path from "path"
 import { quitAction } from "./quit"
diff --git a/src/ui-kit/clickable-view/clickable-view.tsx b/src/ui-kit/clickable-view/clickable-view.tsx
index 0f976c4b..756f7df1 100644
--- a/src/ui-kit/clickable-view/clickable-view.tsx
+++ b/src/ui-kit/clickable-view/clickable-view.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import React, { ReactNode } from "react"
 import { Button, View } from "@nodegui/react-nodegui"
 
diff --git a/src/ui-kit/collapse/collapse.tsx b/src/ui-kit/collapse/collapse.tsx
index ba1f9377..81a81eaf 100644
--- a/src/ui-kit/collapse/collapse.tsx
+++ b/src/ui-kit/collapse/collapse.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import React, { useState } from "react"
 import { Button, View } from "@nodegui/react-nodegui"
 import { ClickableView } from "../clickable-view/clickable-view"
diff --git a/src/ui-kit/colors.ts b/src/ui-kit/colors.ts
index 1ab23b7d..bc3f093c 100644
--- a/src/ui-kit/colors.ts
+++ b/src/ui-kit/colors.ts
@@ -1 +1,7 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 export const brand = "#853773"
diff --git a/src/ui-kit/country/country.tsx b/src/ui-kit/country/country.tsx
index b4c4287f..22a49ae8 100644
--- a/src/ui-kit/country/country.tsx
+++ b/src/ui-kit/country/country.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import React from "react"
 import { resolveCountry } from "../../location/countries"
 import { ResolvedCountry } from "./resolved-country"
diff --git a/src/ui-kit/country/flag.tsx b/src/ui-kit/country/flag.tsx
index b49ddf91..5e633f02 100644
--- a/src/ui-kit/country/flag.tsx
+++ b/src/ui-kit/country/flag.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import React from "react"
 import { Image } from "@nodegui/react-nodegui"
 import { AspectRatioMode } from "@nodegui/nodegui"
diff --git a/src/ui-kit/country/resolved-country.tsx b/src/ui-kit/country/resolved-country.tsx
index a951f87f..fa65e6b2 100644
--- a/src/ui-kit/country/resolved-country.tsx
+++ b/src/ui-kit/country/resolved-country.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import React from "react"
 import { Text, View } from "@nodegui/react-nodegui"
 import { Flag } from "./flag"
diff --git a/src/ui-kit/mbutton/mbutton.tsx b/src/ui-kit/mbutton/mbutton.tsx
index ad20596c..44d4f73f 100644
--- a/src/ui-kit/mbutton/mbutton.tsx
+++ b/src/ui-kit/mbutton/mbutton.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import React from "react"
 import { Button, useEventHandler } from "@nodegui/react-nodegui"
 import { brand } from "../colors"
diff --git a/src/ui-kit/spinner/spinner.tsx b/src/ui-kit/spinner/spinner.tsx
index a4907b60..b2bf0567 100644
--- a/src/ui-kit/spinner/spinner.tsx
+++ b/src/ui-kit/spinner/spinner.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import React, { MutableRefObject, useCallback, useEffect, useRef } from "react"
 import { Image, View } from "@nodegui/react-nodegui"
 import { QLabel, QMovie } from "@nodegui/nodegui"
diff --git a/src/ui-kit/toggle/toggle.tsx b/src/ui-kit/toggle/toggle.tsx
index 1ff496bc..3e10e2de 100644
--- a/src/ui-kit/toggle/toggle.tsx
+++ b/src/ui-kit/toggle/toggle.tsx
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import React from "react"
 import { View } from "@nodegui/react-nodegui"
 import { ClickableView } from "../clickable-view/clickable-view"
diff --git a/src/ui-kit/typography.ts b/src/ui-kit/typography.ts
index 8c1f98d2..bcb17b5f 100644
--- a/src/ui-kit/typography.ts
+++ b/src/ui-kit/typography.ts
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 export const textSmall = "font-size: 12px;"
 export const textRegular = "font-size: 14px;"
 export const textLarger = "font-size: 16px;"
diff --git a/src/utils/mode.ts b/src/utils/mode.ts
index 333f7580..aad09338 100644
--- a/src/utils/mode.ts
+++ b/src/utils/mode.ts
@@ -1,2 +1,8 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 export const isProduction = (): boolean => process.env.NODE_ENV == "production"
 export const isDevelopment = (): boolean => !isProduction()
diff --git a/src/utils/on-process-exit.ts b/src/utils/on-process-exit.ts
index 12f265e1..6b749f60 100644
--- a/src/utils/on-process-exit.ts
+++ b/src/utils/on-process-exit.ts
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 export const onProcessExit = (hook: Function): void => {
     const shutdown = (): void => {
         console.log("Shutting down...")
diff --git a/src/utils/paths.ts b/src/utils/paths.ts
index c3b9bcae..fd3dd6f4 100644
--- a/src/utils/paths.ts
+++ b/src/utils/paths.ts
@@ -1,3 +1,9 @@
+/**
+ * Copyright (c) 2020 BlockDev AG
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 import * as path from "path"
 
 /**
diff --git a/yarn.lock b/yarn.lock
index a9bdb309..3733e4a8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2531,6 +2531,11 @@ eslint-config-prettier@^6.10.0:
   dependencies:
     get-stdin "^6.0.0"
 
+eslint-plugin-header@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-header/-/eslint-plugin-header-3.0.0.tgz#0e048b5f0adfdd9754142d59d551ae6bfdaf90ad"
+  integrity sha512-OIu2ciVW8jK4Ove4JHm1I7X0C98PZuLCyCsoUhAm2HpyGS+zr34qLM6iV06unnDvssvvEh5BkOfaLRF+N7cGoQ==
+
 eslint-plugin-prettier@^3.1.2:
   version "3.1.2"
   resolved "https://registry.yarnpkg.com/eslint-plugin-prettier/-/eslint-plugin-prettier-3.1.2.tgz#432e5a667666ab84ce72f945c72f77d996a5c9ba"