diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
new file mode 100644
index 00000000..efc6d05e
--- /dev/null
+++ b/.github/workflows/pull_request.yml
@@ -0,0 +1,29 @@
+name: Pull request
+
+on:
+  pull_request:
+    types: [opened, reopened, synchronize]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  tests:
+    name: Test
+    uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
+    with:
+      linux_os_versions: '["noble", "jammy", "focal", "rhel-ubi9"]'
+      linux_pre_build_command: command -v apt >/dev/null 2>&1 && apt update && apt install -y libsqlite3-dev libncurses-dev || (command -v yum >/dev/null 2>&1 && yum update -y && yum install -y sqlite-devel ncurses-devel)
+      linux_build_command: 'swift build'
+      linux_swift_versions: '["nightly-main", "nightly-6.2"]'
+      windows_swift_versions: '["nightly-main"]'
+      windows_build_command: 'swift build'
+  soundness:
+    name: Soundness
+    uses: swiftlang/github-workflows/.github/workflows/soundness.yml@main
+    with:
+      license_header_check_project_name: "Swift"
+      api_breakage_check_enabled: false
+      unacceptable_language_check_enabled: false
+      format_check_enabled: false
diff --git a/.license_header_template b/.license_header_template
new file mode 100644
index 00000000..52d6f278
--- /dev/null
+++ b/.license_header_template
@@ -0,0 +1,11 @@
+@@===----------------------------------------------------------------------===@@
+@@
+@@ This source file is part of the Swift open source project
+@@
+@@ Copyright (c) YEARS Apple Inc. and the Swift project authors
+@@ Licensed under Apache License v2.0 with Runtime Library Exception
+@@
+@@ See http://swift.org/LICENSE.txt for license information
+@@ See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+@@
+@@===----------------------------------------------------------------------===@@
diff --git a/.licenseignore b/.licenseignore
new file mode 100644
index 00000000..21fbce89
--- /dev/null
+++ b/.licenseignore
@@ -0,0 +1,9 @@
+**/*.mlmodel
+**/*.pbxproj
+**/*.png
+**/*.xcworkspacedata
+**/Package.swift
+.dir-locals.el
+.editorconfig
+CODEOWNERS
+Package.swift
diff --git a/Tests/SWBCoreTests/ProductTypesTests.swift b/Tests/SWBCoreTests/ProductTypesTests.swift
index 3baeb0ef..5bc412bb 100644
--- a/Tests/SWBCoreTests/ProductTypesTests.swift
+++ b/Tests/SWBCoreTests/ProductTypesTests.swift
@@ -1,9 +1,14 @@
+//===----------------------------------------------------------------------===//
 //
-//  ProductTypesTests.swift
-//  SWBCoreTests
+// This source file is part of the Swift open source project
 //
-//  Copyright © 2024 Apple Inc. All rights reserved.
+// Copyright (c) 2025 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
 //
+// See http://swift.org/LICENSE.txt for license information
+// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
 
 import Testing
 
diff --git a/Tests/SwiftBuildTests/TestData/CommandLineTool/CommandLineTool/main.c b/Tests/SwiftBuildTests/TestData/CommandLineTool/CommandLineTool/main.c
index 33c14ce1..cdee1235 100644
--- a/Tests/SwiftBuildTests/TestData/CommandLineTool/CommandLineTool/main.c
+++ b/Tests/SwiftBuildTests/TestData/CommandLineTool/CommandLineTool/main.c
@@ -1,3 +1,15 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift open source project
+//
+// Copyright (c) 2025 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See http://swift.org/LICENSE.txt for license information
+// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+
 int main() {
     return 0;
 }
diff --git a/Tests/SwiftBuildTests/TestData/CommandLineToolPackage/Sources/CommandLineToolPackage/main.swift b/Tests/SwiftBuildTests/TestData/CommandLineToolPackage/Sources/CommandLineToolPackage/main.swift
index e69de29b..380508dc 100644
--- a/Tests/SwiftBuildTests/TestData/CommandLineToolPackage/Sources/CommandLineToolPackage/main.swift
+++ b/Tests/SwiftBuildTests/TestData/CommandLineToolPackage/Sources/CommandLineToolPackage/main.swift
@@ -0,0 +1,12 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift open source project
+//
+// Copyright (c) 2025 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See http://swift.org/LICENSE.txt for license information
+// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+
diff --git a/Utilities/swift-ci-perf-tests.sh b/Utilities/swift-ci-perf-tests.sh
index 255c7e09..92b4f169 100755
--- a/Utilities/swift-ci-perf-tests.sh
+++ b/Utilities/swift-ci-perf-tests.sh
@@ -1,4 +1,15 @@
-#!/usr/bin/env bash
+#!/bin/bash
+##===----------------------------------------------------------------------===##
+##
+## This source file is part of the Swift open source project
+##
+## Copyright (c) 2025 Apple Inc. and the Swift project authors
+## Licensed under Apache License v2.0 with Runtime Library Exception
+##
+## See http://swift.org/LICENSE.txt for license information
+## See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+##
+##===----------------------------------------------------------------------===##
 
 set -euo pipefail