diff --git a/TLSify/Package.swift b/TLSify/Package.swift
index 2420756..c1b4ec7 100644
--- a/TLSify/Package.swift
+++ b/TLSify/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.9
+// swift-tools-version:6.0
 //===----------------------------------------------------------------------===//
 //
 // This source file is part of the SwiftNIO open source project
@@ -19,10 +19,6 @@ let strictConcurrencyDevelopment = false
 
 let strictConcurrencySettings: [SwiftSetting] = {
     var initialSettings: [SwiftSetting] = []
-    initialSettings.append(contentsOf: [
-        .enableUpcomingFeature("StrictConcurrency"),
-        .enableUpcomingFeature("InferSendableFromCaptures"),
-    ])
 
     if strictConcurrencyDevelopment {
         // -warnings-as-errors here is a workaround so that IDE-based development can
diff --git a/UniversalBootstrapDemo/Package.swift b/UniversalBootstrapDemo/Package.swift
index 0b7b566..3887cbd 100644
--- a/UniversalBootstrapDemo/Package.swift
+++ b/UniversalBootstrapDemo/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.9
+// swift-tools-version:6.0
 //===----------------------------------------------------------------------===//
 //
 // This source file is part of the SwiftNIO open source project
@@ -19,10 +19,6 @@ let strictConcurrencyDevelopment = false
 
 let strictConcurrencySettings: [SwiftSetting] = {
     var initialSettings: [SwiftSetting] = []
-    initialSettings.append(contentsOf: [
-        .enableUpcomingFeature("StrictConcurrency"),
-        .enableUpcomingFeature("InferSendableFromCaptures"),
-    ])
 
     if strictConcurrencyDevelopment {
         // -warnings-as-errors here is a workaround so that IDE-based development can
diff --git a/backpressure-file-io-channel/Package.swift b/backpressure-file-io-channel/Package.swift
index 60b3302..989c197 100644
--- a/backpressure-file-io-channel/Package.swift
+++ b/backpressure-file-io-channel/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.9
+// swift-tools-version:6.0
 //===----------------------------------------------------------------------===//
 //
 // This source file is part of the SwiftNIO open source project
@@ -19,10 +19,6 @@ let strictConcurrencyDevelopment = false
 
 let strictConcurrencySettings: [SwiftSetting] = {
     var initialSettings: [SwiftSetting] = []
-    initialSettings.append(contentsOf: [
-        .enableUpcomingFeature("StrictConcurrency"),
-        .enableUpcomingFeature("InferSendableFromCaptures"),
-    ])
 
     if strictConcurrencyDevelopment {
         // -warnings-as-errors here is a workaround so that IDE-based development can
diff --git a/backpressure-file-io-channel/Tests/BackpressureChannelToFileIOTests/IntegrationTest.swift b/backpressure-file-io-channel/Tests/BackpressureChannelToFileIOTests/IntegrationTest.swift
index 90383a0..524de26 100644
--- a/backpressure-file-io-channel/Tests/BackpressureChannelToFileIOTests/IntegrationTest.swift
+++ b/backpressure-file-io-channel/Tests/BackpressureChannelToFileIOTests/IntegrationTest.swift
@@ -72,7 +72,7 @@ final class IntegrationTest: XCTestCase {
         // And write a byte.
         self.testToChannel.write(Data("X".utf8))
 
-        final class InjectReadHandler: ChannelInboundHandler {
+        final class InjectReadHandler: ChannelInboundHandler, Sendable {
             typealias InboundIn = ByteBuffer
 
             func handlerAdded(context: ChannelHandlerContext) {
@@ -88,7 +88,9 @@ final class IntegrationTest: XCTestCase {
         // To make sure that EOF is seen, we'll inject a `read()` because otherwise there won't be reads because the
         // HTTP server implements backpressure correctly... The read injection handler has to go at the very beginning
         // of the pipeline so the HTTP server can't hold that `read()`.
-        XCTAssertNoThrow(try self.channel.pipeline.addHandler(InjectReadHandler(), position: .first).wait())
+        XCTAssertNoThrow(
+            try self.channel.pipeline.addHandler(InjectReadHandler(), position: .first).wait()
+        )
         XCTAssertNoThrow(try self.channel.closeFuture.wait())
         self.channel = nil  // So tearDown doesn't close it again.
 
@@ -138,19 +140,21 @@ extension IntegrationTest {
         var maybeChannel: Channel? = nil
         XCTAssertNoThrow(
             try maybeChannel = NIOPipeBootstrap(group: group)
-                .channelInitializer { channel in
+                .channelInitializer { [fileIO, tempDir] channel in
                     channel.pipeline.configureHTTPServerPipeline(withErrorHandling: false).flatMap {
-                        channel.pipeline.addHandler(
-                            SaveEverythingHTTPServer(
-                                fileIO: self.fileIO,
-                                uploadDirectory: self.tempDir
+                        channel.eventLoop.makeCompletedFuture {
+                            try channel.pipeline.syncOperations.addHandler(
+                                SaveEverythingHTTPServer(
+                                    fileIO: fileIO,
+                                    uploadDirectory: tempDir
+                                )
                             )
-                        )
+                        }
                     }
                 }
-                .withPipes(
-                    inputDescriptor: dup(testToChannel.fileHandleForReading.fileDescriptor),
-                    outputDescriptor: dup(channelToTest.fileHandleForWriting.fileDescriptor)
+                .takingOwnershipOfDescriptors(
+                    input: dup(testToChannel.fileHandleForReading.fileDescriptor),
+                    output: dup(channelToTest.fileHandleForWriting.fileDescriptor)
                 )
                 .wait()
         )
diff --git a/connect-proxy/Package.swift b/connect-proxy/Package.swift
index f983b80..60956c3 100644
--- a/connect-proxy/Package.swift
+++ b/connect-proxy/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.9
+// swift-tools-version:6.0
 //===----------------------------------------------------------------------===//
 //
 // This source file is part of the SwiftNIO open source project
@@ -19,10 +19,6 @@ let strictConcurrencyDevelopment = false
 
 let strictConcurrencySettings: [SwiftSetting] = {
     var initialSettings: [SwiftSetting] = []
-    initialSettings.append(contentsOf: [
-        .enableUpcomingFeature("StrictConcurrency"),
-        .enableUpcomingFeature("InferSendableFromCaptures"),
-    ])
 
     if strictConcurrencyDevelopment {
         // -warnings-as-errors here is a workaround so that IDE-based development can
diff --git a/http-responsiveness-server/Package.swift b/http-responsiveness-server/Package.swift
index 391e612..3a9373a 100644
--- a/http-responsiveness-server/Package.swift
+++ b/http-responsiveness-server/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version: 5.9
+// swift-tools-version: 6.0
 //===----------------------------------------------------------------------===//
 //
 // This source file is part of the SwiftNIO open source project
@@ -19,10 +19,6 @@ let strictConcurrencyDevelopment = false
 
 let strictConcurrencySettings: [SwiftSetting] = {
     var initialSettings: [SwiftSetting] = []
-    initialSettings.append(contentsOf: [
-        .enableUpcomingFeature("StrictConcurrency"),
-        .enableUpcomingFeature("InferSendableFromCaptures"),
-    ])
 
     if strictConcurrencyDevelopment {
         // -warnings-as-errors here is a workaround so that IDE-based development can
@@ -49,7 +45,6 @@ let package = Package(
             url: "https://github.com/apple/swift-nio-extras.git",
             revision: "4804de1953c14ce71cfca47a03fb4581a6b3301c"
         ),
-        .package(url: "https://github.com/apple/swift-http-types.git", from: "1.1.0"),
         .package(url: "https://github.com/apple/swift-argument-parser.git", from: "1.4.0"),
         .package(url: "https://github.com/swift-extras/swift-extras-json.git", from: "0.6.0"),
         .package(url: "https://github.com/apple/swift-nio-transport-services.git", from: "1.23.0"),
diff --git a/http2-client/Package.swift b/http2-client/Package.swift
index 1a071bd..959f9fa 100644
--- a/http2-client/Package.swift
+++ b/http2-client/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.9
+// swift-tools-version:6.0
 //===----------------------------------------------------------------------===//
 //
 // This source file is part of the SwiftNIO open source project
@@ -19,10 +19,6 @@ let strictConcurrencyDevelopment = false
 
 let strictConcurrencySettings: [SwiftSetting] = {
     var initialSettings: [SwiftSetting] = []
-    initialSettings.append(contentsOf: [
-        .enableUpcomingFeature("StrictConcurrency"),
-        .enableUpcomingFeature("InferSendableFromCaptures"),
-    ])
 
     if strictConcurrencyDevelopment {
         // -warnings-as-errors here is a workaround so that IDE-based development can
diff --git a/http2-server/Package.swift b/http2-server/Package.swift
index 7ae97bf..229843f 100644
--- a/http2-server/Package.swift
+++ b/http2-server/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.9
+// swift-tools-version:6.0
 //===----------------------------------------------------------------------===//
 //
 // This source file is part of the SwiftNIO open source project
@@ -19,10 +19,6 @@ let strictConcurrencyDevelopment = false
 
 let strictConcurrencySettings: [SwiftSetting] = {
     var initialSettings: [SwiftSetting] = []
-    initialSettings.append(contentsOf: [
-        .enableUpcomingFeature("StrictConcurrency"),
-        .enableUpcomingFeature("InferSendableFromCaptures"),
-    ])
 
     if strictConcurrencyDevelopment {
         // -warnings-as-errors here is a workaround so that IDE-based development can
diff --git a/json-rpc/Package.swift b/json-rpc/Package.swift
index 545a7be..fffaae7 100644
--- a/json-rpc/Package.swift
+++ b/json-rpc/Package.swift
@@ -19,10 +19,6 @@ let strictConcurrencyDevelopment = false
 
 let strictConcurrencySettings: [SwiftSetting] = {
     var initialSettings: [SwiftSetting] = []
-    initialSettings.append(contentsOf: [
-        .enableUpcomingFeature("StrictConcurrency"),
-        .enableUpcomingFeature("InferSendableFromCaptures"),
-    ])
 
     if strictConcurrencyDevelopment {
         // -warnings-as-errors here is a workaround so that IDE-based development can
diff --git a/json-rpc/Tests/JsonRpcTests/JsonRpcTests.swift b/json-rpc/Tests/JsonRpcTests/JsonRpcTests.swift
index de58b85..9d6b7fb 100644
--- a/json-rpc/Tests/JsonRpcTests/JsonRpcTests.swift
+++ b/json-rpc/Tests/JsonRpcTests/JsonRpcTests.swift
@@ -123,8 +123,8 @@ final class JSONRPCTests: XCTestCase {
         let expectedResponse = RPCObject("ok")
         for expectedParam in expectedParams {
             // start server
-            let server = TCPServer(group: eventLoopGroup) { _, params, callback in
-                XCTAssertEqual(expectedParams, params, "expected params to match")
+            let server = TCPServer(group: eventLoopGroup) { _, param, callback in
+                XCTAssertEqual(expectedParam, param, "expected params to match")
                 callback(.success(expectedResponse))
             }
             _ = try! server.start(host: address.0, port: address.1).wait()
@@ -132,7 +132,7 @@ final class JSONRPCTests: XCTestCase {
             let client = TCPClient(group: eventLoopGroup)
             _ = try! client.connect(host: address.0, port: address.1).wait()
             // perform the method call
-            let result = try! client.call(method: "test", params: expectedParams).wait()
+            let result = try! client.call(method: "test", params: expectedParam).wait()
             switch result {
             case .success(let response):
                 XCTAssertEqual(expectedResponse, response, "expected result ot match")
diff --git a/nio-launchd/Package.swift b/nio-launchd/Package.swift
index 5830291..2d159b9 100644
--- a/nio-launchd/Package.swift
+++ b/nio-launchd/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.9
+// swift-tools-version:6.0
 //===----------------------------------------------------------------------===//
 //
 // This source file is part of the SwiftNIO open source project
@@ -19,10 +19,6 @@ let strictConcurrencyDevelopment = false
 
 let strictConcurrencySettings: [SwiftSetting] = {
     var initialSettings: [SwiftSetting] = []
-    initialSettings.append(contentsOf: [
-        .enableUpcomingFeature("StrictConcurrency"),
-        .enableUpcomingFeature("InferSendableFromCaptures"),
-    ])
 
     if strictConcurrencyDevelopment {
         // -warnings-as-errors here is a workaround so that IDE-based development can