diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..77086de
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,44 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  macos:
+    name: macOS (Xcode ${{ matrix.xcode }})
+    strategy:
+      fail-fast: false
+      matrix:
+        xcode: ["13.4.1", "13.2.1"]
+        include:
+          - xcode: "13.4.1"
+            macos: macOS-12
+          - xcode: "13.2.1"
+            macos: macOS-11
+    runs-on: ${{ matrix.macos }}
+    env:
+      DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode }}.app/Contents/Developer
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v3
+      - name: Run Tests
+        run: swift test
+  linux:
+    name: Linux (Swift ${{ matrix.swift }})
+    strategy:
+      fail-fast: false
+      matrix:
+        swift: ["5.5", "5.6"]
+    runs-on: ubuntu-latest
+    container: swift:${{ matrix.swift }}
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v3
+      - name: Run Tests
+        run: swift test
+
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..9334ef7
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2022 Alexander Grebenyuk
+
+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/Sources/URLQueryEncoder/URLQueryEncoder.swift b/Sources/URLQueryEncoder/URLQueryEncoder.swift
index 478e095..c73f2c2 100644
--- a/Sources/URLQueryEncoder/URLQueryEncoder.swift
+++ b/Sources/URLQueryEncoder/URLQueryEncoder.swift
@@ -1,7 +1,3 @@
-// The MIT License (MIT)
-//
-// Copyright (c) 2021 Alexander Grebenyuk (github.com/kean).
-
 import Foundation
 
 public final class URLQueryEncoder {
diff --git a/Tests/URLQueryEncoderTests/URLQueryEncoderTests.swift b/Tests/URLQueryEncoderTests/URLQueryEncoderTests.swift
index 82f36ff..b59f766 100644
--- a/Tests/URLQueryEncoderTests/URLQueryEncoderTests.swift
+++ b/Tests/URLQueryEncoderTests/URLQueryEncoderTests.swift
@@ -1,7 +1,3 @@
-// The MIT License (MIT)
-//
-// Copyright (c) 2021 Alexander Grebenyuk (github.com/kean).
-
 import XCTest
 import URLQueryEncoder