diff --git a/Package.swift b/Package.swift
index 61dfb92..62cdbca 100644
--- a/Package.swift
+++ b/Package.swift
@@ -26,9 +26,7 @@ let package = Package(
                 .product(name: "SwiftTypeReader", package: "SwiftTypeReader"),
                 .product(name: "TypeScriptAST", package: "TypeScriptAST")
             ],
-            swiftSettings: [
-                .enableUpcomingFeature("BareSlashRegexLiterals"),
-            ]
+            swiftSettings: swiftSettings()
         ),
         .testTarget(
             name: "CodableToTypeScriptTests",
@@ -39,3 +37,10 @@ let package = Package(
         ),
     ]
 )
+
+func swiftSettings() -> [SwiftSetting] {
+    return [
+        .enableUpcomingFeature("BareSlashRegexLiterals"),
+        .enableExperimentalFeature("StrictConcurrency")
+    ]
+}
diff --git a/Sources/CodableToTypeScript/Extensions/TSASTEx.swift b/Sources/CodableToTypeScript/Extensions/TSASTEx.swift
index 15802fa..d68fadb 100644
--- a/Sources/CodableToTypeScript/Extensions/TSASTEx.swift
+++ b/Sources/CodableToTypeScript/Extensions/TSASTEx.swift
@@ -49,6 +49,6 @@ extension TSIdentType {
 }
 
 extension TSIdentExpr {
-    static let json = TSIdentExpr("json")
-    static let entity = TSIdentExpr("entity")
+    static var json: TSIdentExpr { TSIdentExpr("json") }
+    static var entity: TSIdentExpr { TSIdentExpr("entity") }
 }
diff --git a/Sources/CodableToTypeScript/Value/CodecPresence.swift b/Sources/CodableToTypeScript/Value/CodecPresence.swift
index 6d72c52..467d125 100644
--- a/Sources/CodableToTypeScript/Value/CodecPresence.swift
+++ b/Sources/CodableToTypeScript/Value/CodecPresence.swift
@@ -1,4 +1,4 @@
-public enum CodecPresence: Int, Comparable {
+public enum CodecPresence: Int, Sendable & Hashable & Comparable {
     case identity       = 0
     case conditional    = 1
     case required       = 2
diff --git a/Sources/CodableToTypeScript/Value/GenerationTarget.swift b/Sources/CodableToTypeScript/Value/GenerationTarget.swift
index 5f158ee..4152cfa 100644
--- a/Sources/CodableToTypeScript/Value/GenerationTarget.swift
+++ b/Sources/CodableToTypeScript/Value/GenerationTarget.swift
@@ -1,4 +1,4 @@
-public enum GenerationTarget {
+public enum GenerationTarget: Sendable & Hashable {
     case entity
     case json
 }
diff --git a/Sources/CodableToTypeScript/Value/NamePath.swift b/Sources/CodableToTypeScript/Value/NamePath.swift
index 69901c1..a0d2cf0 100644
--- a/Sources/CodableToTypeScript/Value/NamePath.swift
+++ b/Sources/CodableToTypeScript/Value/NamePath.swift
@@ -1,4 +1,4 @@
-struct NamePath {
+struct NamePath: Sendable & Hashable {
     var items: [String]
 
     init(_ items: [String]) {
diff --git a/Sources/CodableToTypeScript/Value/TSKeyword.swift b/Sources/CodableToTypeScript/Value/TSKeyword.swift
index 765f988..ad0b98d 100644
--- a/Sources/CodableToTypeScript/Value/TSKeyword.swift
+++ b/Sources/CodableToTypeScript/Value/TSKeyword.swift
@@ -1,4 +1,4 @@
-enum TSKeyword: String {
+enum TSKeyword: String, Sendable & Hashable {
     case `break`
     case `case`
     case `catch`
diff --git a/Sources/CodableToTypeScript/Value/TypeMap.swift b/Sources/CodableToTypeScript/Value/TypeMap.swift
index 5770ae9..6dd3065 100644
--- a/Sources/CodableToTypeScript/Value/TypeMap.swift
+++ b/Sources/CodableToTypeScript/Value/TypeMap.swift
@@ -1,7 +1,7 @@
 import SwiftTypeReader
 
-public struct TypeMap {
-    public struct Entry {
+public struct TypeMap: Sendable {
+    public struct Entry: Sendable {
         public static func identity(name: String) -> Entry {
             return Entry(
                 entityType: name,
@@ -43,8 +43,8 @@ public struct TypeMap {
         }
     }
 
-    public typealias MapFunction = (any SType) -> Entry?
-    
+    public typealias MapFunction = @Sendable (any SType) -> Entry?
+
     public static let `default` = TypeMap(
         table: TypeMap.defaultTable
     )
@@ -69,7 +69,7 @@ public struct TypeMap {
     ]
 
     public init(
-        table: [String : Entry]? = nil,
+        table: [String: Entry]? = nil,
         mapFunction: MapFunction? = nil
     ) {
         self.table = table ?? Self.defaultTable