diff --git a/Sources/JSON/Dictionary+JSON.swift b/Sources/JSON/Dictionary+JSON.swift
index 74e6f0d..880ce5d 100644
--- a/Sources/JSON/Dictionary+JSON.swift
+++ b/Sources/JSON/Dictionary+JSON.swift
@@ -1,3 +1,4 @@
+import CoreFoundation
 import Foundation
 
 public extension [String: Any] {
diff --git a/Sources/JSON/JSON.swift b/Sources/JSON/JSON.swift
index cd59b06..45a519b 100644
--- a/Sources/JSON/JSON.swift
+++ b/Sources/JSON/JSON.swift
@@ -1,3 +1,4 @@
+import CoreFoundation
 import Foundation
 
 public enum JSON: