diff --git a/Sources/OpenAPIRuntime/Conversion/ParameterStyles.swift b/Sources/OpenAPIRuntime/Conversion/ParameterStyles.swift
index 5a833cba..032fa425 100644
--- a/Sources/OpenAPIRuntime/Conversion/ParameterStyles.swift
+++ b/Sources/OpenAPIRuntime/Conversion/ParameterStyles.swift
@@ -45,6 +45,7 @@ extension ParameterStyle {
 
     /// Returns the default value of the explode field for the given style
     /// - Parameter style: The parameter style.
+    /// - Returns: The explode value.
     static func defaultExplodeFor(forStyle style: ParameterStyle) -> Bool {
         style == .form
     }
diff --git a/Tests/OpenAPIRuntimeTests/Base/Test_OpenAPIValue.swift b/Tests/OpenAPIRuntimeTests/Base/Test_OpenAPIValue.swift
index e513e26e..5549e88a 100644
--- a/Tests/OpenAPIRuntimeTests/Base/Test_OpenAPIValue.swift
+++ b/Tests/OpenAPIRuntimeTests/Base/Test_OpenAPIValue.swift
@@ -12,7 +12,7 @@
 //
 //===----------------------------------------------------------------------===//
 import XCTest
-@_spi(Generated)@testable import OpenAPIRuntime
+@_spi(Generated) @testable import OpenAPIRuntime
 
 final class Test_OpenAPIValue: Test_Runtime {
 
diff --git a/Tests/OpenAPIRuntimeTests/Deprecated/Test_Deprecated.swift b/Tests/OpenAPIRuntimeTests/Deprecated/Test_Deprecated.swift
index 8c030ccc..73df4445 100644
--- a/Tests/OpenAPIRuntimeTests/Deprecated/Test_Deprecated.swift
+++ b/Tests/OpenAPIRuntimeTests/Deprecated/Test_Deprecated.swift
@@ -12,7 +12,7 @@
 //
 //===----------------------------------------------------------------------===//
 import XCTest
-@_spi(Generated)@testable import OpenAPIRuntime
+@_spi(Generated) @testable import OpenAPIRuntime
 
 final class Test_Deprecated: Test_Runtime {
     // Tests for deprecated code goes here.
diff --git a/Tests/OpenAPIRuntimeTests/Interface/Test_HTTPBody.swift b/Tests/OpenAPIRuntimeTests/Interface/Test_HTTPBody.swift
index ae7b97d3..bc6cc623 100644
--- a/Tests/OpenAPIRuntimeTests/Interface/Test_HTTPBody.swift
+++ b/Tests/OpenAPIRuntimeTests/Interface/Test_HTTPBody.swift
@@ -12,7 +12,7 @@
 //
 //===----------------------------------------------------------------------===//
 import XCTest
-@_spi(Generated)@testable import OpenAPIRuntime
+@_spi(Generated) @testable import OpenAPIRuntime
 import Foundation
 
 final class Test_Body: Test_Runtime {
diff --git a/Tests/OpenAPIRuntimeTests/Interface/Test_UniversalServer.swift b/Tests/OpenAPIRuntimeTests/Interface/Test_UniversalServer.swift
index b3992464..61ef88f3 100644
--- a/Tests/OpenAPIRuntimeTests/Interface/Test_UniversalServer.swift
+++ b/Tests/OpenAPIRuntimeTests/Interface/Test_UniversalServer.swift
@@ -12,7 +12,7 @@
 //
 //===----------------------------------------------------------------------===//
 import XCTest
-@_spi(Generated)@testable import OpenAPIRuntime
+@_spi(Generated) @testable import OpenAPIRuntime
 
 final class Test_UniversalServer: Test_Runtime {
 
diff --git a/Tests/OpenAPIRuntimeTests/Test_Runtime.swift b/Tests/OpenAPIRuntimeTests/Test_Runtime.swift
index 2d6756a4..4ab91a9f 100644
--- a/Tests/OpenAPIRuntimeTests/Test_Runtime.swift
+++ b/Tests/OpenAPIRuntimeTests/Test_Runtime.swift
@@ -18,6 +18,7 @@ import HTTPTypes
 
 class Test_Runtime: XCTestCase {
 
+    /// Setup method called before the invocation of each test method in the class.
     override func setUp() async throws {
         try await super.setUp()
         continueAfterFailure = false
diff --git a/Tests/OpenAPIRuntimeTests/URICoder/Test_URICodingRoundtrip.swift b/Tests/OpenAPIRuntimeTests/URICoder/Test_URICodingRoundtrip.swift
index 11ef8705..fcce3775 100644
--- a/Tests/OpenAPIRuntimeTests/URICoder/Test_URICodingRoundtrip.swift
+++ b/Tests/OpenAPIRuntimeTests/URICoder/Test_URICodingRoundtrip.swift
@@ -12,7 +12,7 @@
 //
 //===----------------------------------------------------------------------===//
 import XCTest
-@_spi(Generated)@testable import OpenAPIRuntime
+@_spi(Generated) @testable import OpenAPIRuntime
 #if os(Linux)
 @preconcurrency import Foundation
 #endif
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 33f860d9..76bb652d 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -17,7 +17,7 @@ RUN mkdir -p $HOME/.tools
 RUN echo 'export PATH="$HOME/.tools:$PATH"' >> $HOME/.profile
 
 # swift-format
-ARG swiftformat_version=508.0.0
+ARG swiftformat_version=509.0.0
 RUN git clone --branch $swiftformat_version --depth 1 https://github.com/apple/swift-format $HOME/.tools/swift-format-source
 RUN cd $HOME/.tools/swift-format-source && swift build -c release
 RUN ln -s $HOME/.tools/swift-format-source/.build/release/swift-format $HOME/.tools/swift-format