diff --git a/.github/scripts/format.swift b/.github/scripts/format.swift
new file mode 100755
index 0000000..5df8916
--- /dev/null
+++ b/.github/scripts/format.swift
@@ -0,0 +1,14 @@
+#!/usr/bin/env swift
+
+// Workflow commands for GitHub Actions
+// https://docs.github.com/en/actions/writing-workflows/choosing-what-your-workflow-does/workflow-commands-for-github-actions
+
+let regex = #/(?<file>.+\.swift):(?<line>\d+):(?<column>\d+): (?<severity>.+): \[(?<title>.+)\] (?<message>.+)/#
+while let line = readLine() {
+    if let match = try? regex.firstMatch(in: line) {
+        let (_, file, line, column, severity, title, message) = match.output
+        print("::\(severity) file=\(file),line=\(line),col=\(column),title=\(title)::\(message)")
+    } else {
+        print(line)
+    }
+}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 366832b..a809c41 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: macOS-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v7
       - name: Build and test
         shell: bash
         env:
@@ -29,5 +29,13 @@ jobs:
     container:
       image: swift:6.3.3
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v7
       - run: swift test
+  Lint:
+    runs-on: macOS-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v7
+      - name: swift-format lint
+        run: make lint 2>&1 | .github/scripts/format.swift
+        shell: bash
diff --git a/.swift-format b/.swift-format
new file mode 100644
index 0000000..897490b
--- /dev/null
+++ b/.swift-format
@@ -0,0 +1,79 @@
+{
+  "fileScopedDeclarationPrivacy" : {
+    "accessLevel" : "private"
+  },
+  "indentBlankLines" : false,
+  "indentConditionalCompilationBlocks" : false,
+  "indentSwitchCaseLabels" : false,
+  "indentation" : {
+    "spaces" : 4
+  },
+  "lineBreakAroundMultilineExpressionChainComponents" : false,
+  "lineBreakBeforeControlFlowKeywords" : false,
+  "lineBreakBeforeEachArgument" : false,
+  "lineBreakBeforeEachGenericRequirement" : false,
+  "lineBreakBetweenDeclarationAttributes" : false,
+  "lineLength" : 120,
+  "maximumBlankLines" : 1,
+  "multiElementCollectionTrailingCommas" : true,
+  "noAssignmentInExpressions" : {
+    "allowedFunctions" : [
+      "XCTAssertNoThrow"
+    ]
+  },
+  "orderedImports" : {
+    "includeConditionalImports" : false
+  },
+  "prioritizeKeepingFunctionOutputTogether" : false,
+  "reflowMultilineStringLiterals" : "never",
+  "respectsExistingLineBreaks" : true,
+  "rules" : {
+    "AllPublicDeclarationsHaveDocumentation" : false,
+    "AlwaysUseLiteralForEmptyCollectionInit" : false,
+    "AlwaysUseLowerCamelCase" : true,
+    "AmbiguousTrailingClosureOverload" : true,
+    "AvoidRetroactiveConformances" : true,
+    "BeginDocumentationCommentWithOneLineSummary" : false,
+    "DoNotUseSemicolons" : true,
+    "DontRepeatTypeInStaticProperties" : true,
+    "FileScopedDeclarationPrivacy" : true,
+    "FullyIndirectEnum" : true,
+    "GroupNumericLiterals" : true,
+    "IdentifiersMustBeASCII" : true,
+    "NeverForceUnwrap" : false,
+    "NeverUseForceTry" : false,
+    "NeverUseImplicitlyUnwrappedOptionals" : false,
+    "NoAccessLevelOnExtensionDeclaration" : true,
+    "NoAssignmentInExpressions" : true,
+    "NoBlockComments" : true,
+    "NoCasesWithOnlyFallthrough" : true,
+    "NoEmptyLinesOpeningClosingBraces" : false,
+    "NoEmptyTrailingClosureParentheses" : true,
+    "NoLabelsInCasePatterns" : true,
+    "NoLeadingUnderscores" : false,
+    "NoParensAroundConditions" : true,
+    "NoPlaygroundLiterals" : true,
+    "NoVoidReturnOnFunctionSignature" : true,
+    "OmitExplicitReturns" : false,
+    "OneCasePerLine" : true,
+    "OneVariableDeclarationPerLine" : true,
+    "OnlyOneTrailingClosureArgument" : true,
+    "OrderedImports" : true,
+    "ReplaceForEachWithForLoop" : true,
+    "ReturnVoidInsteadOfEmptyTuple" : true,
+    "TypeNamesShouldBeCapitalized" : true,
+    "UseEarlyExits" : false,
+    "UseExplicitNilCheckInConditions" : true,
+    "UseLetInEveryBoundCaseVariable" : true,
+    "UseShorthandTypeNames" : true,
+    "UseSingleLinePropertyGetter" : true,
+    "UseSynthesizedInitializer" : true,
+    "UseTripleSlashForDocumentationComments" : true,
+    "UseWhereClausesInForLoops" : false,
+    "ValidateDocumentationComments" : false
+  },
+  "spacesAroundRangeFormationOperators" : false,
+  "spacesBeforeEndOfLineComments" : 1,
+  "tabWidth" : 8,
+  "version" : 1
+}
diff --git a/Makefile b/Makefile
index c89051f..df35fe7 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,16 @@
+.PHONY: clean test lint format
+
 test:
 	swift test --enable-code-coverage
 	./.github/scripts/codecov.sh $(shell swift test --show-codecov-path)
 
 clean:
 	swift package clean
+
+# MARK: - format
+
+lint:
+	xcrun swift-format lint --recursive --strict ./
+
+format:
+	xcrun swift-format --recursive --in-place ./
diff --git a/Package.swift b/Package.swift
index ece785e..2a1b0b2 100644
--- a/Package.swift
+++ b/Package.swift
@@ -6,15 +6,14 @@ import PackageDescription
 let package = Package(
     name: "XSTooling",
     platforms: [
-        .macOS(.v10_15),
+        .macOS(.v10_15)
     ],
     products: [
         .library(
             name: "XSTooling",
-            targets: ["XSTooling"]),
-    ],
-    dependencies: [
+            targets: ["XSTooling"])
     ],
+    dependencies: [],
     targets: [
         .target(
             name: "XSTooling",
diff --git a/Sources/XSTooling/ProcessCommand.swift b/Sources/XSTooling/ProcessCommand.swift
index be3d79f..93916f5 100644
--- a/Sources/XSTooling/ProcessCommand.swift
+++ b/Sources/XSTooling/ProcessCommand.swift
@@ -14,7 +14,7 @@ public struct ProcessCommand: Hashable, Sendable {
 
     /// The receiver’s executable.
     public var executableURL: URL
-    
+
     /// The command arguments that the system uses to launch the executable.
     public var arguments: [String]
 
diff --git a/Tests/XSToolingTests/GHTest/GHTestCase.swift b/Tests/XSToolingTests/GHTest/GHTestCase.swift
index ff06125..e22d247 100644
--- a/Tests/XSToolingTests/GHTest/GHTestCase.swift
+++ b/Tests/XSToolingTests/GHTest/GHTestCase.swift
@@ -1,6 +1,6 @@
 //
 //  GHTestCase.swift
-//  
+//
 //
 //  Created by Alexander Ignatiev on 12.12.2022.
 //
@@ -11,23 +11,25 @@ class GHTestCase: XCTestCase {
     var github: GHActions { .shared }
 
     var isLinux: Bool {
-#if os(Linux)
+        #if os(Linux)
         return true
-#else
+        #else
         return false
-#endif
+        #endif
     }
 
-#if os(Linux)
+    #if os(Linux)
 
-    override func recordFailure(withDescription description: String, inFile filePath: String, atLine lineNumber: Int, expected: Bool) {
+    override func recordFailure(
+        withDescription description: String, inFile filePath: String, atLine lineNumber: Int, expected: Bool
+    ) {
         if github.isEnabled {
             github.error(file: filePath, line: lineNumber, message: description)
         }
         super.recordFailure(withDescription: description, inFile: filePath, atLine: lineNumber, expected: expected)
     }
 
-#else // os(Darwin)
+    #else // os(Darwin)
 
     override func record(_ issue: XCTIssue) {
         if github.isEnabled {
@@ -41,5 +43,5 @@ class GHTestCase: XCTestCase {
         super.record(issue)
     }
 
-#endif
+    #endif
 }
diff --git a/Tests/XSToolingTests/ShellTests.swift b/Tests/XSToolingTests/ShellTests.swift
index fec2a4c..9fec58d 100644
--- a/Tests/XSToolingTests/ShellTests.swift
+++ b/Tests/XSToolingTests/ShellTests.swift
@@ -29,7 +29,7 @@ final class ShellTests: GHTestCase {
 
     func testZsh() async throws {
         try XCTSkipIf(isLinux)
-        
+
         shell = Shell.zsh
         XCTAssertEqual(shell.path, "/bin/zsh")