diff --git a/Sources/LanguageServerProtocolTransport/JSONRPCConnection.swift b/Sources/LanguageServerProtocolTransport/JSONRPCConnection.swift
index cd0cb5232..919b1536b 100644
--- a/Sources/LanguageServerProtocolTransport/JSONRPCConnection.swift
+++ b/Sources/LanguageServerProtocolTransport/JSONRPCConnection.swift
@@ -284,9 +284,11 @@ public final class JSONRPCConnection: Connection {
   /// - parameter receiveHandler: The message handler to invoke for requests received on the `inFD`.
   ///
   /// - Important: `start` must be called before sending any data over the `JSONRPCConnection`.
+  // Workaround formatter issue: https://github.com/swiftlang/swift-format/issues/1081
+  // swift-format-ignore
   public func start(
     receiveHandler: MessageHandler,
-    closeHandler: @escaping @Sendable () async -> Void = {}
+    closeHandler: nonisolated(nonsending) @escaping @Sendable () async -> Void = {}
   ) {
     queue.sync {
       precondition(state == .created)
diff --git a/Sources/ToolsProtocolsSwiftExtensions/AsyncQueue.swift b/Sources/ToolsProtocolsSwiftExtensions/AsyncQueue.swift
index b06dfb607..163420e87 100644
--- a/Sources/ToolsProtocolsSwiftExtensions/AsyncQueue.swift
+++ b/Sources/ToolsProtocolsSwiftExtensions/AsyncQueue.swift
@@ -89,11 +89,13 @@ public final class AsyncQueue<TaskMetadata: DependencyTracker>: Sendable {
   /// If this is a barrier, all previously scheduled tasks are guaranteed to
   /// finish execution before the barrier is executed and all tasks that are
   /// added later will wait until the barrier finishes execution.
+  // Workaround formatter issue: https://github.com/swiftlang/swift-format/issues/1081
+  // swift-format-ignore
   @discardableResult
   public func async<Success: Sendable>(
     priority: TaskPriority? = nil,
     metadata: TaskMetadata,
-    @_inheritActorContext operation: @escaping @Sendable () async -> Success
+    @_inheritActorContext operation: nonisolated(nonsending) @escaping @Sendable () async -> Success
   ) -> Task<Success, Never> {
     let throwingTask = asyncThrowing(priority: priority, metadata: metadata, operation: operation)
     return Task(priority: priority) {
@@ -111,10 +113,12 @@ public final class AsyncQueue<TaskMetadata: DependencyTracker>: Sendable {
   ///
   /// - Important: The caller is responsible for handling any errors thrown from
   ///   the operation by awaiting the result of the returned task.
+  // Workaround formatter issue: https://github.com/swiftlang/swift-format/issues/1081
+  // swift-format-ignore
   public func asyncThrowing<Success: Sendable>(
     priority: TaskPriority? = nil,
     metadata: TaskMetadata,
-    @_inheritActorContext operation: @escaping @Sendable () async throws -> Success
+    @_inheritActorContext operation: nonisolated(nonsending) @escaping @Sendable () async throws -> Success
   ) -> Task<Success, any Error> {
     let id = UUID()
 
@@ -175,19 +179,23 @@ public final class AsyncQueue<TaskMetadata: DependencyTracker>: Sendable {
 extension AsyncQueue where TaskMetadata == Serial {
   /// Same as ``async(priority:operation:)`` but specialized for serial queues
   /// that don't specify any metadata.
+  // Workaround formatter issue: https://github.com/swiftlang/swift-format/issues/1081
+  // swift-format-ignore
   @discardableResult
   public func async<Success: Sendable>(
     priority: TaskPriority? = nil,
-    @_inheritActorContext operation: @escaping @Sendable () async -> Success
+    @_inheritActorContext operation: nonisolated(nonsending) @escaping @Sendable () async -> Success
   ) -> Task<Success, Never> {
     return self.async(priority: priority, metadata: Serial(), operation: operation)
   }
 
   /// Same as ``asyncThrowing(priority:metadata:operation:)`` but specialized
   /// for serial queues that don't specify any metadata.
+  // Workaround formatter issue: https://github.com/swiftlang/swift-format/issues/1081
+  // swift-format-ignore
   public func asyncThrowing<Success: Sendable>(
     priority: TaskPriority? = nil,
-    @_inheritActorContext operation: @escaping @Sendable () async throws -> Success
+    @_inheritActorContext operation: nonisolated(nonsending) @escaping @Sendable () async throws -> Success
   ) -> Task<Success, any Error> {
     return self.asyncThrowing(priority: priority, metadata: Serial(), operation: operation)
   }
diff --git a/Sources/ToolsProtocolsSwiftExtensions/AsyncUtils.swift b/Sources/ToolsProtocolsSwiftExtensions/AsyncUtils.swift
index 640474c46..aecfbafe7 100644
--- a/Sources/ToolsProtocolsSwiftExtensions/AsyncUtils.swift
+++ b/Sources/ToolsProtocolsSwiftExtensions/AsyncUtils.swift
@@ -137,9 +137,11 @@ extension Task where Failure == Never {
 
 extension Collection where Self: Sendable, Element: Sendable {
   /// Transforms all elements in the collection concurrently and returns the transformed collection.
+  // Workaround formatter issue: https://github.com/swiftlang/swift-format/issues/1081
+  // swift-format-ignore
   @_spi(SourceKitLSP) public func concurrentMap<TransformedElement: Sendable>(
     maxConcurrentTasks: Int = ProcessInfo.processInfo.activeProcessorCount,
-    _ transform: @escaping @Sendable (Element) async -> TransformedElement
+    _ transform: nonisolated(nonsending) @escaping @Sendable (Element) async -> TransformedElement
   ) async -> [TransformedElement] {
     let indexedResults = await withTaskGroup(of: (index: Int, element: TransformedElement).self) { taskGroup in
       var indexedResults: [(index: Int, element: TransformedElement)] = []
@@ -170,7 +172,9 @@ extension Collection where Self: Sendable, Element: Sendable {
   }
 
   /// Invoke `body` for every element in the collection and wait for all calls of `body` to finish
-  @_spi(SourceKitLSP) public func concurrentForEach(_ body: @escaping @Sendable (Element) async -> Void) async {
+  // Workaround formatter issue: https://github.com/swiftlang/swift-format/issues/1081
+  // swift-format-ignore
+  @_spi(SourceKitLSP) public func concurrentForEach(_ body: nonisolated(nonsending) @escaping @Sendable (Element) async -> Void) async {
     await withTaskGroup(of: Void.self) { taskGroup in
       for element in self {
         taskGroup.addTask {
diff --git a/Sources/ToolsProtocolsSwiftExtensions/Task+WithPriorityChangedHandler.swift b/Sources/ToolsProtocolsSwiftExtensions/Task+WithPriorityChangedHandler.swift
index 931d1fe82..ad974a0d4 100644
--- a/Sources/ToolsProtocolsSwiftExtensions/Task+WithPriorityChangedHandler.swift
+++ b/Sources/ToolsProtocolsSwiftExtensions/Task+WithPriorityChangedHandler.swift
@@ -16,10 +16,12 @@
 /// `pollingInterval`.
 /// The function assumes that the original priority of the task is `initialPriority`. If the task priority changed
 /// compared to `initialPriority`, the `taskPriorityChanged` will be called.
+// Workaround formatter issue: https://github.com/swiftlang/swift-format/issues/1081
+// swift-format-ignore
 @_spi(SourceKitLSP) public func withTaskPriorityChangedHandler<T: Sendable>(
   initialPriority: TaskPriority = Task.currentPriority,
   pollingInterval: Duration = .seconds(0.1),
-  @_inheritActorContext operation: @escaping @Sendable () async throws -> T,
+  @_inheritActorContext operation: nonisolated(nonsending) @escaping @Sendable () async throws -> T,
   taskPriorityChanged: @escaping @Sendable () -> Void
 ) async throws -> T {
   let lastPriority = ThreadSafeBox(initialValue: initialPriority)