diff --git a/Sources/LanguageServerProtocol/BaseProtocol.swift b/Sources/LanguageServerProtocol/BaseProtocol.swift
index ec62f4a..30cf30b 100644
--- a/Sources/LanguageServerProtocol/BaseProtocol.swift
+++ b/Sources/LanguageServerProtocol/BaseProtocol.swift
@@ -71,7 +71,10 @@ public extension ValueSet where T: CaseIterable {
     }
 }
 
-public enum LanguageIdentifier: String, Codable, CaseIterable {
+extension ValueSet: Sendable where T: Sendable {
+}
+
+public enum LanguageIdentifier: String, Codable, CaseIterable, Sendable {
 	case abap
 	case windowsbat = "bat"
 	case bibtex
@@ -131,7 +134,7 @@ public enum LanguageIdentifier: String, Codable, CaseIterable {
 	case yaml
 }
 
-public struct DocumentFilter: Codable, Hashable {
+public struct DocumentFilter: Codable, Hashable, Sendable {
     public let language: LanguageIdentifier?
     public let scheme: String?
     public let pattern: String?
diff --git a/Sources/LanguageServerProtocol/BasicStructures.swift b/Sources/LanguageServerProtocol/BasicStructures.swift
index bb34c71..5e30056 100644
--- a/Sources/LanguageServerProtocol/BasicStructures.swift
+++ b/Sources/LanguageServerProtocol/BasicStructures.swift
@@ -108,12 +108,12 @@ extension VersionedTextDocumentIdentifier: CustomStringConvertible {
     }
 }
 
-public struct Location: Codable, Hashable {
+public struct Location: Codable, Hashable, Sendable {
     public let uri: DocumentUri
     public let range: LSPRange
 }
 
-public struct Command: Codable, Hashable {
+public struct Command: Codable, Hashable, Sendable {
     public let title: String
     public let command: String
     public let arguments: [LSPAny]?
@@ -148,7 +148,7 @@ public enum SymbolKind: Int, CaseIterable, Hashable, Codable, Sendable {
     case typeParameter = 26
 }
 
-public enum MarkupKind: String, Codable, Hashable {
+public enum MarkupKind: String, Codable, Hashable, Sendable {
     case plaintext
     case markdown
 }
diff --git a/Sources/LanguageServerProtocol/ClientCapabilities.swift b/Sources/LanguageServerProtocol/ClientCapabilities.swift
index dfabcc7..24266c7 100644
--- a/Sources/LanguageServerProtocol/ClientCapabilities.swift
+++ b/Sources/LanguageServerProtocol/ClientCapabilities.swift
@@ -1,6 +1,6 @@
 import Foundation
 
-public struct DynamicRegistrationClientCapabilities: Codable, Hashable {
+public struct DynamicRegistrationClientCapabilities: Codable, Hashable, Sendable {
     public var dynamicRegistration: Bool?
 
     public init(dynamicRegistration: Bool) {
@@ -8,7 +8,7 @@ public struct DynamicRegistrationClientCapabilities: Codable, Hashable {
     }
 }
 
-public struct DynamicRegistrationLinkSupportClientCapabilities: Codable, Hashable {
+public struct DynamicRegistrationLinkSupportClientCapabilities: Codable, Hashable, Sendable {
     public var dynamicRegistration: Bool?
     public var linkSupport: Bool?
 
@@ -18,20 +18,20 @@ public struct DynamicRegistrationLinkSupportClientCapabilities: Codable, Hashabl
     }
 }
 
-public enum ResourceOperationKind: String, Codable, Hashable {
+public enum ResourceOperationKind: String, Codable, Hashable, Sendable {
     case create
     case rename
     case delete
 }
 
-public enum FailureHandlingKind: String, Codable, Hashable {
+public enum FailureHandlingKind: String, Codable, Hashable, Sendable {
     case abort
     case transactional
     case textOnlyTransactional
     case undo
 }
 
-public struct WorkspaceClientCapabilityEdit: Codable, Hashable {
+public struct WorkspaceClientCapabilityEdit: Codable, Hashable, Sendable {
     public let documentChanges: Bool?
     public let resourceOperations: [ResourceOperationKind]
     public let failureHandling: FailureHandlingKind?
@@ -47,12 +47,12 @@ public typealias DidChangeConfigurationClientCapabilities = GenericDynamicRegist
 
 public typealias DidChangeWatchedFilesClientCapabilities = GenericDynamicRegistration
 
-public struct ShowDocumentClientCapabilities: Hashable, Codable {
+public struct ShowDocumentClientCapabilities: Hashable, Codable, Sendable {
     public var support: Bool
 }
 
-public struct ShowMessageRequestClientCapabilities: Hashable, Codable {
-    public struct MessageActionItemCapabilities: Hashable, Codable {
+public struct ShowMessageRequestClientCapabilities: Hashable, Codable, Sendable {
+    public struct MessageActionItemCapabilities: Hashable, Codable, Sendable {
         public var additionalPropertiesSupport: Bool
     }
 
@@ -63,7 +63,7 @@ public struct ShowMessageRequestClientCapabilities: Hashable, Codable {
     }
 }
 
-public struct WindowClientCapabilities: Hashable, Codable {
+public struct WindowClientCapabilities: Hashable, Codable, Sendable {
     public var workDoneProgress: Bool
     public var showMessage: ShowMessageRequestClientCapabilities
     public var showDocument: ShowDocumentClientCapabilities
@@ -75,7 +75,7 @@ public struct WindowClientCapabilities: Hashable, Codable {
     }
 }
 
-public struct RegularExpressionsClientCapabilities: Hashable, Codable {
+public struct RegularExpressionsClientCapabilities: Hashable, Codable, Sendable {
     public var engine: String
     public var version: String?
 
@@ -85,7 +85,7 @@ public struct RegularExpressionsClientCapabilities: Hashable, Codable {
     }
 }
 
-public struct MarkdownClientCapabilities: Hashable, Codable {
+public struct MarkdownClientCapabilities: Hashable, Codable, Sendable {
     public var parser: String
     public var version: String?
     public var allowedTags: [String]?
@@ -97,7 +97,7 @@ public struct MarkdownClientCapabilities: Hashable, Codable {
     }
 }
 
-public struct GeneralClientCapabilities: Hashable, Codable {
+public struct GeneralClientCapabilities: Hashable, Codable, Sendable {
     public var regularExpressions: RegularExpressionsClientCapabilities?
     public var markdown: MarkdownClientCapabilities?
 
@@ -107,7 +107,7 @@ public struct GeneralClientCapabilities: Hashable, Codable {
     }
 }
 
-public struct TextDocumentSyncClientCapabilities: Codable, Hashable {
+public struct TextDocumentSyncClientCapabilities: Codable, Hashable, Sendable {
     public let dynamicRegistration: Bool?
     public let willSave: Bool?
     public let willSaveWaitUntil: Bool?
@@ -121,7 +121,7 @@ public struct TextDocumentSyncClientCapabilities: Codable, Hashable {
     }
 }
 
-public struct TextDocumentClientCapabilities: Codable, Hashable {
+public struct TextDocumentClientCapabilities: Codable, Hashable, Sendable {
     public var synchronization: TextDocumentSyncClientCapabilities?
     public var completion: CompletionClientCapabilities?
     public var hover: HoverClientCapabilities?
@@ -204,9 +204,9 @@ public struct TextDocumentClientCapabilities: Codable, Hashable {
     }
 }
 
-public struct ClientCapabilities: Codable, Hashable {
-    public struct Workspace: Codable, Hashable {
-        public struct FileOperations: Codable, Hashable {
+public struct ClientCapabilities: Codable, Hashable, Sendable {
+    public struct Workspace: Codable, Hashable, Sendable {
+        public struct FileOperations: Codable, Hashable, Sendable {
             public var dynamicRegistration: Bool?
             public var didCreate: Bool?
             public var willCreate: Bool?
diff --git a/Sources/LanguageServerProtocol/General.swift b/Sources/LanguageServerProtocol/General.swift
index a695047..c60f693 100644
--- a/Sources/LanguageServerProtocol/General.swift
+++ b/Sources/LanguageServerProtocol/General.swift
@@ -1,12 +1,12 @@
 import Foundation
 
-public enum Tracing: String, Codable, Hashable {
+public enum Tracing: String, Codable, Hashable, Sendable {
     case off
     case messages
     case verbose
 }
 
-public struct InitializeParams: Codable {
+public struct InitializeParams: Codable, Hashable, Sendable {
 	public struct ClientInfo: Codable, Hashable, Sendable {
 		public let name: String
 		public let version: String?
diff --git a/Sources/LanguageServerProtocol/LanguageFeatures/CodeAction.swift b/Sources/LanguageServerProtocol/LanguageFeatures/CodeAction.swift
index 500bc4c..5cba0f8 100644
--- a/Sources/LanguageServerProtocol/LanguageFeatures/CodeAction.swift
+++ b/Sources/LanguageServerProtocol/LanguageFeatures/CodeAction.swift
@@ -13,8 +13,8 @@ extension CodeActionKind {
     public static var SourceOrganizeImports: CodeActionKind = "source.organizeImports"
 }
 
-public struct CodeActionClientCapabilities: Codable, Hashable {
-    public struct CodeActionLiteralSupport: Codable, Hashable {
+public struct CodeActionClientCapabilities: Codable, Hashable, Sendable {
+    public struct CodeActionLiteralSupport: Codable, Hashable, Sendable {
         public var codeActionKind: ValueSet<CodeActionKind>
 
         public init(codeActionKind: ValueSet<CodeActionKind>) {
@@ -22,7 +22,7 @@ public struct CodeActionClientCapabilities: Codable, Hashable {
         }
     }
 
-    public struct ResolveSupport: Codable, Hashable {
+    public struct ResolveSupport: Codable, Hashable, Sendable {
         public var properties: [String]
 
         public init(properties: [String]) {
diff --git a/Sources/LanguageServerProtocol/LanguageFeatures/CodeLens.swift b/Sources/LanguageServerProtocol/LanguageFeatures/CodeLens.swift
index 9eeaca2..10d3ba9 100644
--- a/Sources/LanguageServerProtocol/LanguageFeatures/CodeLens.swift
+++ b/Sources/LanguageServerProtocol/LanguageFeatures/CodeLens.swift
@@ -2,7 +2,7 @@ import Foundation
 
 public typealias CodeLensClientCapabilities = DynamicRegistrationClientCapabilities
 
-public struct CodeLensWorkspaceClientCapabilities: Codable, Hashable {
+public struct CodeLensWorkspaceClientCapabilities: Codable, Hashable, Sendable {
     public var refreshSupport: Bool?
 
     public init(refreshSupport: Bool? = nil) {
@@ -10,18 +10,18 @@ public struct CodeLensWorkspaceClientCapabilities: Codable, Hashable {
     }
 }
 
-public struct CodeLensOptions: Codable, Hashable {
+public struct CodeLensOptions: Codable, Hashable, Sendable {
     public var workDoneProgress: Bool?
     public var resolveProvider: Bool?
 }
 
-public struct CodeLensRegistrationOptions: Codable, Hashable {
+public struct CodeLensRegistrationOptions: Codable, Hashable, Sendable {
     public var documentSelector: DocumentSelector?
     public var workDoneProgress: Bool?
     public var resolveProvider: Bool?
 }
 
-public struct CodeLensParams: Codable, Hashable {
+public struct CodeLensParams: Codable, Hashable, Sendable {
     public var textDocument: TextDocumentIdentifier
     public var workDoneToken: ProgressToken?
     public var partialResultToken: ProgressToken?
@@ -33,7 +33,7 @@ public struct CodeLensParams: Codable, Hashable {
     }
 }
 
-public struct CodeLens: Codable {
+public struct CodeLens: Codable, Sendable {
     public var range: LSPRange
     public var command: Command?
     public var data: LSPAny?
diff --git a/Sources/LanguageServerProtocol/LanguageFeatures/Completion.swift b/Sources/LanguageServerProtocol/LanguageFeatures/Completion.swift
index 755846e..da1288b 100644
--- a/Sources/LanguageServerProtocol/LanguageFeatures/Completion.swift
+++ b/Sources/LanguageServerProtocol/LanguageFeatures/Completion.swift
@@ -1,9 +1,9 @@
 import Foundation
 import JSONRPC
 
-public struct CompletionClientCapabilities: Codable, Hashable {
-    public struct CompletionItem: Codable, Hashable {
-        public struct ResolveSupport: Codable, Hashable {
+public struct CompletionClientCapabilities: Codable, Hashable, Sendable {
+    public struct CompletionItem: Codable, Hashable, Sendable {
+        public struct ResolveSupport: Codable, Hashable, Sendable {
             public var properties: [String]
 
             public init(properties: [String]) {
@@ -45,7 +45,7 @@ public struct CompletionClientCapabilities: Codable, Hashable {
         }
     }
 
-    public struct CompletionList: Codable, Hashable {
+    public struct CompletionList: Codable, Hashable, Sendable {
         public var itemDefaults: [String]?
 
         public init(itemDefaults: [String]? = nil) {
@@ -81,7 +81,7 @@ public enum CompletionTriggerKind: Int, Codable, Hashable {
     case triggerForIncompleteCompletions = 3
 }
 
-public enum CompletionItemKind: Int, CaseIterable, Codable, Hashable {
+public enum CompletionItemKind: Int, CaseIterable, Codable, Hashable, Sendable {
     case text = 1
     case method = 2
     case function = 3
@@ -109,7 +109,7 @@ public enum CompletionItemKind: Int, CaseIterable, Codable, Hashable {
     case typeParameter = 25
 }
 
-public enum CompletionItemTag: Int, CaseIterable, Codable, Hashable {
+public enum CompletionItemTag: Int, CaseIterable, Codable, Hashable, Sendable {
     case deprecated = 1
 }
 
@@ -235,7 +235,7 @@ public struct CompletionRegistrationOptions: Codable {
     public let resolveProvider: Bool?
 }
 
-public enum InsertTextMode: Int, CaseIterable, Codable, Hashable {
+public enum InsertTextMode: Int, CaseIterable, Codable, Hashable, Sendable {
     case asIs = 1
     case adjustIndentation = 2
 }
diff --git a/Sources/LanguageServerProtocol/LanguageFeatures/Diagnostics.swift b/Sources/LanguageServerProtocol/LanguageFeatures/Diagnostics.swift
index e4204dd..8237e79 100644
--- a/Sources/LanguageServerProtocol/LanguageFeatures/Diagnostics.swift
+++ b/Sources/LanguageServerProtocol/LanguageFeatures/Diagnostics.swift
@@ -1,6 +1,6 @@
 import Foundation
 
-public struct PublishDiagnosticsClientCapabilities: Codable, Hashable {
+public struct PublishDiagnosticsClientCapabilities: Codable, Hashable, Sendable {
     public var relatedInformation: Bool?
     public var tagSupport: ValueSet<DiagnosticTag>?
     public var versionSupport: Bool?
@@ -16,26 +16,26 @@ public struct PublishDiagnosticsClientCapabilities: Codable, Hashable {
     }
 }
 
-public struct DiagnosticRelatedInformation: Codable, Hashable {
+public struct DiagnosticRelatedInformation: Codable, Hashable, Sendable {
     public let location: Location
     public let message: String
 }
 
 public typealias DiagnosticCode = TwoTypeOption<Int, String>
 
-public enum DiagnosticSeverity: Int, CaseIterable, Codable, Hashable {
+public enum DiagnosticSeverity: Int, CaseIterable, Codable, Hashable, Sendable {
     case error = 1
     case warning = 2
     case information = 3
     case hint = 4
 }
 
-public enum DiagnosticTag: Int, CaseIterable, Codable, Hashable {
+public enum DiagnosticTag: Int, CaseIterable, Codable, Hashable, Sendable {
     case unnecessary = 1
     case deprecated = 2
 }
 
-public struct Diagnostic: Codable, Hashable {
+public struct Diagnostic: Codable, Hashable, Sendable {
     public let range: LSPRange
     public let severity: DiagnosticSeverity?
     public let code: DiagnosticCode?
@@ -45,7 +45,7 @@ public struct Diagnostic: Codable, Hashable {
     public let relatedInformation: [DiagnosticRelatedInformation]?
 }
 
-public struct PublishDiagnosticsParams: Codable, Hashable {
+public struct PublishDiagnosticsParams: Codable, Hashable, Sendable {
     public let uri: DocumentUri
     public let version: Int?
     public let diagnostics: [Diagnostic]
diff --git a/Sources/LanguageServerProtocol/LanguageFeatures/DocumentLink.swift b/Sources/LanguageServerProtocol/LanguageFeatures/DocumentLink.swift
index 1e4bef8..9990be6 100644
--- a/Sources/LanguageServerProtocol/LanguageFeatures/DocumentLink.swift
+++ b/Sources/LanguageServerProtocol/LanguageFeatures/DocumentLink.swift
@@ -7,7 +7,7 @@
 
 import Foundation
 
-public struct DocumentLinkClientCapabilities: Codable, Hashable {
+public struct DocumentLinkClientCapabilities: Codable, Hashable, Sendable {
     public var dynamicRegistration: Bool?
     public var tooltipSupport: Bool?
 
@@ -17,12 +17,12 @@ public struct DocumentLinkClientCapabilities: Codable, Hashable {
     }
 }
 
-public struct DocumentLinkOptions: Codable, Hashable {
+public struct DocumentLinkOptions: Codable, Hashable, Sendable {
     public var workDoneProgress: Bool?
     public var resolveProvider: Bool?
 }
 
-public struct DocumentLinkRegistrationOptions: Codable, Hashable {
+public struct DocumentLinkRegistrationOptions: Codable, Hashable, Sendable {
     public var workDoneProgress: Bool?
     public var documentSelector: DocumentSelector?
     public var resolveProvider: Bool?
@@ -34,12 +34,12 @@ public struct DocumentLinkRegistrationOptions: Codable, Hashable {
     }
 }
 
-public struct DocumentLinkParams: Codable, Hashable {
+public struct DocumentLinkParams: Codable, Hashable, Sendable {
     public var workDoneToken: ProgressToken?
     public var partialResultToken: ProgressToken?
 }
 
-public struct DocumentLink: Codable, Hashable {
+public struct DocumentLink: Codable, Hashable, Sendable {
     public var range: LSPRange
     public var target: DocumentUri?
     public var tooltip: String?
diff --git a/Sources/LanguageServerProtocol/LanguageFeatures/DocumentSymbol.swift b/Sources/LanguageServerProtocol/LanguageFeatures/DocumentSymbol.swift
index 303c3d3..d4babd4 100644
--- a/Sources/LanguageServerProtocol/LanguageFeatures/DocumentSymbol.swift
+++ b/Sources/LanguageServerProtocol/LanguageFeatures/DocumentSymbol.swift
@@ -1,6 +1,6 @@
 import Foundation
 
-public struct DocumentSymbolClientCapabilities: Codable, Hashable {
+public struct DocumentSymbolClientCapabilities: Codable, Hashable, Sendable {
     public var dynamicRegistration: Bool?
     public var symbolKind: ValueSet<SymbolKind>?
     public var hierarchicalDocumentSymbolSupport: Bool?
diff --git a/Sources/LanguageServerProtocol/LanguageFeatures/FoldingRange.swift b/Sources/LanguageServerProtocol/LanguageFeatures/FoldingRange.swift
index 590de8e..ffdabe0 100644
--- a/Sources/LanguageServerProtocol/LanguageFeatures/FoldingRange.swift
+++ b/Sources/LanguageServerProtocol/LanguageFeatures/FoldingRange.swift
@@ -1,6 +1,6 @@
 import Foundation
 
-public struct FoldingRangeClientCapabilities: Codable, Hashable {
+public struct FoldingRangeClientCapabilities: Codable, Hashable, Sendable {
     public var dynamicRegistration: Bool?
     public var rangeLimit: Int?
     public var lineFoldingOnly: Bool?
@@ -12,7 +12,7 @@ public struct FoldingRangeClientCapabilities: Codable, Hashable {
     }
 }
 
-public struct FoldingRangeParams: Codable, Hashable {
+public struct FoldingRangeParams: Codable, Hashable, Sendable {
     public let textDocument: TextDocumentIdentifier
 
     public init(textDocument: TextDocumentIdentifier) {
@@ -20,13 +20,13 @@ public struct FoldingRangeParams: Codable, Hashable {
     }
 }
 
-public enum FoldingRangeKind: String, CaseIterable, Codable, Hashable {
+public enum FoldingRangeKind: String, CaseIterable, Codable, Hashable, Sendable {
     case comment
     case imports
     case region
 }
 
-public struct FoldingRange: Codable, Hashable {
+public struct FoldingRange: Codable, Hashable, Sendable {
     public let startLine: Int
     public let startCharacter: Int?
     public let endLine: Int
diff --git a/Sources/LanguageServerProtocol/LanguageFeatures/Hover.swift b/Sources/LanguageServerProtocol/LanguageFeatures/Hover.swift
index 60274c4..363991b 100644
--- a/Sources/LanguageServerProtocol/LanguageFeatures/Hover.swift
+++ b/Sources/LanguageServerProtocol/LanguageFeatures/Hover.swift
@@ -1,6 +1,6 @@
 import Foundation
 
-public struct HoverClientCapabilities: Codable, Hashable {
+public struct HoverClientCapabilities: Codable, Hashable, Sendable {
     public var dynamicRegistration: Bool?
     public var contentFormat: [MarkupKind]?
 
diff --git a/Sources/LanguageServerProtocol/LanguageFeatures/Rename.swift b/Sources/LanguageServerProtocol/LanguageFeatures/Rename.swift
index 3b31559..ab68a90 100644
--- a/Sources/LanguageServerProtocol/LanguageFeatures/Rename.swift
+++ b/Sources/LanguageServerProtocol/LanguageFeatures/Rename.swift
@@ -1,10 +1,10 @@
 import Foundation
 
-public enum PrepareSupportDefaultBehavior: Int, CaseIterable, Codable, Hashable {
+public enum PrepareSupportDefaultBehavior: Int, CaseIterable, Codable, Hashable, Sendable {
     case Identifier = 1
 }
 
-public struct RenameClientCapabilities: Codable, Hashable {
+public struct RenameClientCapabilities: Codable, Hashable, Sendable {
     public let dynamicRegistration: Bool?
     public let prepareSupport: Bool?
     public let prepareSupportDefaultBehavior: PrepareSupportDefaultBehavior?
@@ -19,14 +19,14 @@ public struct RenameClientCapabilities: Codable, Hashable {
 }
 
 
-public struct RenameOptions: Codable, Hashable {
+public struct RenameOptions: Codable, Hashable, Sendable {
     public var workDoneProgress: Bool?
     public var prepareProvider: Bool?
 }
 
 public typealias PrepareRenameParams = TextDocumentPositionParams
 
-public struct RenameParams: Codable, Hashable {
+public struct RenameParams: Codable, Hashable, Sendable {
     public let textDocument: TextDocumentIdentifier
     public let position: Position
     public let newName: String
@@ -38,12 +38,12 @@ public struct RenameParams: Codable, Hashable {
     }
 }
 
-public struct RangeWithPlaceholder: Codable, Hashable {
+public struct RangeWithPlaceholder: Codable, Hashable, Sendable {
     public let range: LSPRange
     public let placeholder: String
 }
 
-public struct PrepareRenameDefaultBehavior: Codable {
+public struct PrepareRenameDefaultBehavior: Codable, Hashable, Sendable {
     public let defaultBehavior: Bool
 }
 
diff --git a/Sources/LanguageServerProtocol/LanguageFeatures/SemanticTokens.swift b/Sources/LanguageServerProtocol/LanguageFeatures/SemanticTokens.swift
index 5a8906f..d2dc3b8 100644
--- a/Sources/LanguageServerProtocol/LanguageFeatures/SemanticTokens.swift
+++ b/Sources/LanguageServerProtocol/LanguageFeatures/SemanticTokens.swift
@@ -1,6 +1,6 @@
 import Foundation
 
-public struct SemanticTokensWorkspaceClientCapabilities: Codable, Hashable {
+public struct SemanticTokensWorkspaceClientCapabilities: Codable, Hashable, Sendable {
     public var refreshSupport: Bool?
 
     public init(refreshSupport: Bool) {
@@ -8,18 +8,18 @@ public struct SemanticTokensWorkspaceClientCapabilities: Codable, Hashable {
     }
 }
 
-public enum TokenFormat: String, Codable, Hashable {
+public enum TokenFormat: String, Codable, Hashable, Sendable {
     case relative = "relative"
 
     public static let Relative = TokenFormat.relative
 }
 
-public struct SemanticTokensClientCapabilities: Codable, Hashable {
-    public struct Requests: Codable, Hashable {
-        public struct Range: Codable, Hashable {
+public struct SemanticTokensClientCapabilities: Codable, Hashable, Sendable {
+    public struct Requests: Codable, Hashable, Sendable {
+        public struct Range: Codable, Hashable, Sendable {
         }
 
-        public struct Full: Codable, Hashable {
+        public struct Full: Codable, Hashable, Sendable {
             public var delta: Bool?
 
             public init(delta: Bool = true) {
diff --git a/Sources/LanguageServerProtocol/LanguageFeatures/SignatureHelp.swift b/Sources/LanguageServerProtocol/LanguageFeatures/SignatureHelp.swift
index bda5df5..ae2c723 100644
--- a/Sources/LanguageServerProtocol/LanguageFeatures/SignatureHelp.swift
+++ b/Sources/LanguageServerProtocol/LanguageFeatures/SignatureHelp.swift
@@ -1,8 +1,8 @@
 import Foundation
 
-public struct SignatureHelpClientCapabilities: Codable, Hashable {
-    public struct SignatureInformation: Codable, Hashable {
-        public struct ParameterInformation: Codable, Hashable {
+public struct SignatureHelpClientCapabilities: Codable, Hashable, Sendable {
+    public struct SignatureInformation: Codable, Hashable, Sendable {
+        public struct ParameterInformation: Codable, Hashable, Sendable {
             public var labelOffsetSupport: Bool?
 
             public init(labelOffsetSupport: Bool? = nil) {
diff --git a/Sources/LanguageServerProtocol/Utility.swift b/Sources/LanguageServerProtocol/Utility.swift
index 59ccf50..aa0679e 100644
--- a/Sources/LanguageServerProtocol/Utility.swift
+++ b/Sources/LanguageServerProtocol/Utility.swift
@@ -1,6 +1,6 @@
 import Foundation
 
-public struct GenericDynamicRegistration: Codable, Hashable {
+public struct GenericDynamicRegistration: Codable, Hashable, Sendable {
     public let dynamicRegistration: Bool?
 
     public init(dynamicRegistration: Bool) {
diff --git a/Sources/LanguageServerProtocol/Workspace.swift b/Sources/LanguageServerProtocol/Workspace.swift
index 906d73e..beac86e 100644
--- a/Sources/LanguageServerProtocol/Workspace.swift
+++ b/Sources/LanguageServerProtocol/Workspace.swift
@@ -52,7 +52,7 @@ public struct DidChangeWatchedFilesParams: Codable, Hashable {
     }
 }
 
-public struct WorkspaceFolder: Codable, Hashable {
+public struct WorkspaceFolder: Codable, Hashable, Sendable {
     public let uri: String
     public let name: String
 
diff --git a/Sources/LanguageServerProtocol/Workspace/Symbol.swift b/Sources/LanguageServerProtocol/Workspace/Symbol.swift
index 4c5dd12..36087d1 100644
--- a/Sources/LanguageServerProtocol/Workspace/Symbol.swift
+++ b/Sources/LanguageServerProtocol/Workspace/Symbol.swift
@@ -1,7 +1,7 @@
 import Foundation
 
-public struct WorkspaceSymbolClientCapabilities: Codable, Hashable {
-    public struct Properties: Codable, Hashable {
+public struct WorkspaceSymbolClientCapabilities: Codable, Hashable, Sendable {
+    public struct Properties: Codable, Hashable, Sendable {
         public var properties: [String]
     }
 
@@ -25,14 +25,14 @@ public struct WorkspaceSymbolClientCapabilities: Codable, Hashable {
     }
 }
 
-public struct WorkspaceSymbolOptions: Codable, Hashable {
+public struct WorkspaceSymbolOptions: Codable, Hashable, Sendable {
     public var workDoneProgress: Bool?
     public var resolveProvider: Bool?
 }
 
 public typealias WorkspaceSymbolRegistrationOptions = WorkspaceSymbolOptions
 
-public struct WorkspaceSymbolParams: Codable, Hashable {
+public struct WorkspaceSymbolParams: Codable, Hashable, Sendable {
     public var workDoneToken: ProgressToken?
     public var partialResultToken: ProgressToken?
     public var query: String
@@ -44,7 +44,7 @@ public struct WorkspaceSymbolParams: Codable, Hashable {
     }
 }
 
-public struct WorkspaceSymbol: Codable, Hashable {
+public struct WorkspaceSymbol: Codable, Hashable, Sendable {
     public var name: String
     public var kind: SymbolKind
     public var tags: [SymbolTag]?