diff --git a/Sources/NIOTSHTTPClient/main.swift b/Sources/NIOTSHTTPClient/main.swift
index c936385..9cd04c0 100644
--- a/Sources/NIOTSHTTPClient/main.swift
+++ b/Sources/NIOTSHTTPClient/main.swift
@@ -20,7 +20,7 @@ import NIOTransportServices
 import NIOHTTP1
 import Network
 
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 final class HTTP1ClientHandler: ChannelInboundHandler {
     typealias OutboundOut = HTTPClientRequestPart
     typealias InboundIn = HTTPClientResponsePart
diff --git a/Sources/NIOTSHTTPServer/main.swift b/Sources/NIOTSHTTPServer/main.swift
index 9ffb90e..83267aa 100644
--- a/Sources/NIOTSHTTPServer/main.swift
+++ b/Sources/NIOTSHTTPServer/main.swift
@@ -20,7 +20,7 @@ import NIOTransportServices
 import NIOHTTP1
 import Network
 
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 final class HTTP1ServerHandler: ChannelInboundHandler {
     typealias InboundIn = HTTPServerRequestPart
     typealias OutboundOut = HTTPServerResponsePart
diff --git a/Sources/NIOTransportServices/NIOTSChannelOptions.swift b/Sources/NIOTransportServices/NIOTSChannelOptions.swift
index 46fff6b..c8417c3 100644
--- a/Sources/NIOTransportServices/NIOTSChannelOptions.swift
+++ b/Sources/NIOTransportServices/NIOTSChannelOptions.swift
@@ -25,7 +25,7 @@ import NIO
 /// transitioning into the `failed` state, causing immediate connection failure.
 ///
 /// This option is only valid with `NIOTSConnectionBootstrap`.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 public struct NIOTSWaitForActivityOption: ChannelOption, Equatable {
     public typealias Value = Bool
 
@@ -38,7 +38,7 @@ public struct NIOTSWaitForActivityOption: ChannelOption, Equatable {
 /// `true`. By default this option is set to `false`.
 ///
 /// This option must be set on the bootstrap: setting it after the channel is initialized will have no effect.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 public struct NIOTSEnablePeerToPeerOption: ChannelOption, Equatable {
     public typealias Value = Bool
 
@@ -47,7 +47,7 @@ public struct NIOTSEnablePeerToPeerOption: ChannelOption, Equatable {
 
 
 /// Options that can be set explicitly and only on bootstraps provided by `NIOTransportServices`.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 public struct NIOTSChannelOptions {
     /// - seealso: `NIOTSWaitForActivityOption`.
     public static let waitForActivity = NIOTSWaitForActivityOption()
diff --git a/Sources/NIOTransportServices/NIOTSConnectionBootstrap.swift b/Sources/NIOTransportServices/NIOTSConnectionBootstrap.swift
index 28d72b1..84a126f 100644
--- a/Sources/NIOTransportServices/NIOTSConnectionBootstrap.swift
+++ b/Sources/NIOTransportServices/NIOTSConnectionBootstrap.swift
@@ -19,7 +19,7 @@ import NIO
 import Dispatch
 import Network
 
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 public final class NIOTSConnectionBootstrap {
     private let group: NIOTSEventLoopGroup
     private var channelInitializer: ((Channel) -> EventLoopFuture<Void>)?
@@ -178,7 +178,7 @@ public final class NIOTSConnectionBootstrap {
 
 // This is a backport of ChannelOptions.Storage from SwiftNIO because the initializer wasn't public, so we couldn't actually build it.
 // When https://github.com/apple/swift-nio/pull/988 is in a shipped release, we can remove this and simply bump our lowest supported version of SwiftNIO.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 internal struct ChannelOptionsStorage {
     internal var _storage: [(Any, (Any, (Channel) -> (Any, Any) -> EventLoopFuture<Void>))] = []
 
diff --git a/Sources/NIOTransportServices/NIOTSConnectionChannel.swift b/Sources/NIOTransportServices/NIOTSConnectionChannel.swift
index 2c5bcfb..963b0e7 100644
--- a/Sources/NIOTransportServices/NIOTSConnectionChannel.swift
+++ b/Sources/NIOTransportServices/NIOTSConnectionChannel.swift
@@ -25,7 +25,7 @@ import Network
 import Security
 
 /// Execute the given function and synchronously complete the given `EventLoopPromise` (if not `nil`).
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 func executeAndComplete<T>(_ promise: EventLoopPromise<T>?, _ body: () throws -> T) {
     do {
         let result = try body()
@@ -36,7 +36,7 @@ func executeAndComplete<T>(_ promise: EventLoopPromise<T>?, _ body: () throws ->
 }
 
 /// Merge two possible promises together such that firing the result will fire both.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 private func mergePromises(_ first: EventLoopPromise<Void>?, _ second: EventLoopPromise<Void>?) -> EventLoopPromise<Void>? {
     if let first = first {
         if let second = second {
@@ -50,7 +50,7 @@ private func mergePromises(_ first: EventLoopPromise<Void>?, _ second: EventLoop
 
 
 /// Channel options for the connection channel.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 private struct ConnectionChannelOptions {
     /// Whether autoRead is enabled for this channel.
     internal var autoRead: Bool = true
@@ -68,7 +68,7 @@ private typealias PendingWrite = (data: ByteBuffer, promise: EventLoopPromise<Vo
 
 
 /// A structure that manages backpressure signaling on this channel.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 private struct BackpressureManager {
     /// Whether the channel is writable, given the current watermark state.
     ///
@@ -144,7 +144,7 @@ private struct BackpressureManager {
 }
 
 
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 internal final class NIOTSConnectionChannel {
     /// The `ByteBufferAllocator` for this `Channel`.
     public let allocator = ByteBufferAllocator()
@@ -248,7 +248,7 @@ internal final class NIOTSConnectionChannel {
 
 
 // MARK:- NIOTSConnectionChannel implementation of Channel
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 extension NIOTSConnectionChannel: Channel {
     /// The `ChannelPipeline` for this `Channel`.
     public var pipeline: ChannelPipeline {
@@ -384,7 +384,7 @@ extension NIOTSConnectionChannel: Channel {
 
 
 // MARK:- NIOTSConnectionChannel implementation of StateManagedChannel.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 extension NIOTSConnectionChannel: StateManagedChannel {
     typealias ActiveSubstate = TCPSubstate
 
@@ -632,7 +632,7 @@ extension NIOTSConnectionChannel: StateManagedChannel {
 
 
 // MARK:- Implementations of the callbacks passed to NWConnection.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 extension NIOTSConnectionChannel {
     /// Called by the underlying `NWConnection` when its internal state has changed.
     private func stateUpdateHandler(newState: NWConnection.State) {
@@ -732,7 +732,7 @@ extension NIOTSConnectionChannel {
 
 
 // MARK:- Implementations of state management for the channel.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 extension NIOTSConnectionChannel {
     /// Whether the inbound side of the connection is still open.
     private var inboundStreamOpen: Bool {
@@ -789,7 +789,7 @@ extension NIOTSConnectionChannel {
 
 
 // MARK:- Managing TCP substate.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 fileprivate extension ChannelState where ActiveSubstate == NIOTSConnectionChannel.TCPSubstate {
     /// Close the input side of the TCP state machine.
     mutating func closeInput() throws {
diff --git a/Sources/NIOTransportServices/NIOTSErrors.swift b/Sources/NIOTransportServices/NIOTSErrors.swift
index 6dfcff6..3671f13 100644
--- a/Sources/NIOTransportServices/NIOTSErrors.swift
+++ b/Sources/NIOTransportServices/NIOTSErrors.swift
@@ -19,10 +19,10 @@ import NIO
 /// A tag protocol that can be used to cover all errors thrown by `NIOTransportServices`.
 ///
 /// Users are strongly encouraged not to conform their own types to this protocol.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 public protocol NIOTSError: Error, Equatable { }
 
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 public enum NIOTSErrors {
     /// `InvalidChannelStateTransition` is thrown when a channel has been asked to do something
     /// that is incompatible with its current channel state: e.g. attempting to register an
diff --git a/Sources/NIOTransportServices/NIOTSEventLoop.swift b/Sources/NIOTransportServices/NIOTSEventLoop.swift
index 31daed0..1c3e291 100644
--- a/Sources/NIOTransportServices/NIOTSEventLoop.swift
+++ b/Sources/NIOTransportServices/NIOTSEventLoop.swift
@@ -27,7 +27,7 @@ import NIOConcurrencyHelpers
 /// `EventLoop`s that implement `QoSEventLoop` can interact with `Dispatch` to propagate information
 /// about the QoS required for a specific task block. This allows tasks to be dispatched onto an
 /// event loop with a different priority than the majority of tasks on that loop.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 public protocol QoSEventLoop: EventLoop {
     /// Submit a given task to be executed by the `EventLoop` at a given `qos`.
     func execute(qos: DispatchQoS, _ task: @escaping () -> Void) -> Void
@@ -45,7 +45,7 @@ public protocol QoSEventLoop: EventLoop {
 /// new registrations, but it will continue to accept new scheduled work items. When a loop is closed, it
 /// will accept neither new registrations nor new scheduled work items, but it will continue to process
 /// the queue until it has drained.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 fileprivate enum LifecycleState {
     case active
     case closing
@@ -53,7 +53,7 @@ fileprivate enum LifecycleState {
 }
 
 
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 internal class NIOTSEventLoop: QoSEventLoop {
     private let loop: DispatchQueue
     private let taskQueue: DispatchQueue
@@ -156,7 +156,7 @@ internal class NIOTSEventLoop: QoSEventLoop {
     }
 }
 
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 extension NIOTSEventLoop {
     /// Create a `DispatchQueue` to use for events on a given `Channel`.
     ///
@@ -169,7 +169,7 @@ extension NIOTSEventLoop {
     }
 }
 
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 extension NIOTSEventLoop {
     internal func closeGently() -> EventLoopFuture<Void> {
         let p: EventLoopPromise<Void> = self.makePromise()
@@ -208,7 +208,7 @@ extension NIOTSEventLoop {
     }
 }
 
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 extension NIOTSEventLoop {
     /// Record a given channel with this event loop.
     internal func register(_ channel: Channel) throws {
diff --git a/Sources/NIOTransportServices/NIOTSEventLoopGroup.swift b/Sources/NIOTransportServices/NIOTSEventLoopGroup.swift
index d2f42f9..be20de1 100644
--- a/Sources/NIOTransportServices/NIOTSEventLoopGroup.swift
+++ b/Sources/NIOTransportServices/NIOTSEventLoopGroup.swift
@@ -47,7 +47,7 @@ import Network
 /// platforms, the `NIOTSEventLoopGroup` should be preferred over the
 /// `MultiThreadedEventLoopGroup`. In particular, on iOS, the `NIOTSEventLoopGroup` is the
 /// preferred networking backend.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 public final class NIOTSEventLoopGroup: EventLoopGroup {
     private let index = Atomic<Int>(value: 0)
     private let eventLoops: [NIOTSEventLoop]
diff --git a/Sources/NIOTransportServices/NIOTSListenerBootstrap.swift b/Sources/NIOTransportServices/NIOTSListenerBootstrap.swift
index 9102051..c667f8c 100644
--- a/Sources/NIOTransportServices/NIOTSListenerBootstrap.swift
+++ b/Sources/NIOTransportServices/NIOTSListenerBootstrap.swift
@@ -19,7 +19,7 @@ import NIO
 import Dispatch
 import Network
 
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 public final class NIOTSListenerBootstrap {
     private let group: EventLoopGroup
     private let childGroup: NIOTSEventLoopGroup
@@ -237,7 +237,7 @@ public final class NIOTSListenerBootstrap {
 }
 
 
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 private class AcceptHandler: ChannelInboundHandler {
     typealias InboundIn = NIOTSConnectionChannel
     typealias InboundOut = NIOTSConnectionChannel
diff --git a/Sources/NIOTransportServices/NIOTSListenerChannel.swift b/Sources/NIOTransportServices/NIOTSListenerChannel.swift
index 19a84ec..067c606 100644
--- a/Sources/NIOTransportServices/NIOTSListenerChannel.swift
+++ b/Sources/NIOTransportServices/NIOTSListenerChannel.swift
@@ -22,7 +22,7 @@ import NIOConcurrencyHelpers
 import Dispatch
 import Network
 
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 internal final class NIOTSListenerChannel {
     /// The `ByteBufferAllocator` for this `Channel`.
     public let allocator = ByteBufferAllocator()
@@ -124,7 +124,7 @@ internal final class NIOTSListenerChannel {
 
 
 // MARK:- NIOTSListenerChannel implementation of Channel
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 extension NIOTSListenerChannel: Channel {
     /// The `ChannelPipeline` for this `Channel`.
     public var pipeline: ChannelPipeline {
@@ -240,7 +240,7 @@ extension NIOTSListenerChannel: Channel {
 
 
 // MARK:- NIOTSListenerChannel implementation of StateManagedChannel.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 extension NIOTSListenerChannel: StateManagedChannel {
     typealias ActiveSubstate = ListenerActiveSubstate
 
@@ -400,7 +400,7 @@ extension NIOTSListenerChannel: StateManagedChannel {
 
 
 // MARK:- Implementations of the callbacks passed to NWListener.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 extension NIOTSListenerChannel {
     /// Called by the underlying `NWListener` when its internal state has changed.
     private func stateUpdateHandler(newState: NWListener.State) {
@@ -447,7 +447,7 @@ extension NIOTSListenerChannel {
 
 
 // MARK:- Implementations of state management for the channel.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 extension NIOTSListenerChannel {
     /// Make the channel active.
     private func bindComplete0() {
diff --git a/Sources/NIOTransportServices/NIOTSNetworkEvents.swift b/Sources/NIOTransportServices/NIOTSNetworkEvents.swift
index cf82c26..03c1634 100644
--- a/Sources/NIOTransportServices/NIOTSNetworkEvents.swift
+++ b/Sources/NIOTransportServices/NIOTSNetworkEvents.swift
@@ -21,10 +21,10 @@ import NIO
 /// A tag protocol that can be used to cover all network events emitted by `NIOTS`.
 ///
 /// Users are strongly encouraged not to conform their own types to this protocol.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 public protocol NIOTSNetworkEvent: Equatable { }
 
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 public enum NIOTSNetworkEvents {
     /// This event is fired whenever the OS has informed NIO that there is a better
     /// path available to the endpoint that this `Channel` is currently connected to,
diff --git a/Sources/NIOTransportServices/SocketAddress+NWEndpoint.swift b/Sources/NIOTransportServices/SocketAddress+NWEndpoint.swift
index 490a699..16467c4 100644
--- a/Sources/NIOTransportServices/SocketAddress+NWEndpoint.swift
+++ b/Sources/NIOTransportServices/SocketAddress+NWEndpoint.swift
@@ -20,7 +20,7 @@ import Foundation
 import NIO
 import Network
 
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 extension IPv4Address {
     /// Create an `IPv4Address` object from a `sockaddr_in`.
     internal init(fromSockAddr sockAddr: sockaddr_in) {
@@ -33,7 +33,7 @@ extension IPv4Address {
     }
 }
 
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 extension IPv6Address {
     internal init(fromSockAddr sockAddr: sockaddr_in6) {
         var localAddr = sockAddr
@@ -48,7 +48,7 @@ extension IPv6Address {
     }
 }
 
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 extension NWEndpoint {
     /// Create an `NWEndpoint` value from a NIO `SocketAddress`.
     internal init(fromSocketAddress socketAddress: SocketAddress) {
@@ -74,7 +74,7 @@ extension NWEndpoint {
 
 // TODO: We'll want to get rid of this when we support returning NWEndpoint directly from
 // the various address-handling functions.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 extension SocketAddress {
     internal init(fromNWEndpoint endpoint: NWEndpoint) throws {
         switch endpoint {
@@ -110,7 +110,7 @@ extension SocketAddress {
     }
 }
 
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 internal extension SocketAddress {
     /// Change the port on this `SocketAddress` to a new value.
     mutating func newPort(_ port: UInt16) {
diff --git a/Sources/NIOTransportServices/StateManagedChannel.swift b/Sources/NIOTransportServices/StateManagedChannel.swift
index 72c8bb0..68a2e0e 100644
--- a/Sources/NIOTransportServices/StateManagedChannel.swift
+++ b/Sources/NIOTransportServices/StateManagedChannel.swift
@@ -27,7 +27,7 @@ import Network
 /// active state. This can be used to provide more fine-grained tracking of states
 /// within the active state of a channel. Example uses include for tracking TCP half-closure
 /// state in a TCP stream channel.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 internal protocol ActiveChannelSubstate {
     /// Create the substate in its default initial state.
     init()
@@ -35,7 +35,7 @@ internal protocol ActiveChannelSubstate {
 
 
 /// A state machine enum that tracks the state of the connection channel.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 internal enum ChannelState<ActiveSubstate: ActiveChannelSubstate> {
     case idle
     case registered
@@ -85,7 +85,7 @@ internal enum ChannelState<ActiveSubstate: ActiveChannelSubstate> {
 
 
 /// The kinds of activation that a channel may support.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 internal enum ActivationType {
     case connect
     case bind
@@ -98,7 +98,7 @@ internal enum ActivationType {
 /// This protocol provides default hooks for managing state appropriately for a
 /// given channel. It also provides some default implementations of `Channel` methods
 /// for simple behaviours.
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 internal protocol StateManagedChannel: Channel, ChannelCore {
     associatedtype ActiveSubstate: ActiveChannelSubstate
 
@@ -125,7 +125,7 @@ internal protocol StateManagedChannel: Channel, ChannelCore {
     func readIfNeeded0() -> Void
 }
 
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 extension StateManagedChannel {
     public var eventLoop: EventLoop {
         return self.tsEventLoop
diff --git a/Sources/NIOTransportServices/TCPOptions+SocketChannelOption.swift b/Sources/NIOTransportServices/TCPOptions+SocketChannelOption.swift
index 07ebfef..f2cf5bb 100644
--- a/Sources/NIOTransportServices/TCPOptions+SocketChannelOption.swift
+++ b/Sources/NIOTransportServices/TCPOptions+SocketChannelOption.swift
@@ -19,7 +19,7 @@ import Foundation
 import NIO
 import Network
 
-@available(OSX 10.14, iOS 12.0, tvOS 12.0, *)
+@available(OSX 10.14, iOS 12.0, tvOS 12.0, watchOS 6.0, *)
 internal extension NWProtocolTCP.Options {
     /// Apply a given channel `SocketOption` to this protocol options state.
     func applyChannelOption(option: SocketOption, value: SocketOptionValue) throws {