diff --git a/Sources/VaporAPNS/APNSContainers.swift b/Sources/VaporAPNS/APNSContainers.swift
index 2db0813..7ea4686 100644
--- a/Sources/VaporAPNS/APNSContainers.swift
+++ b/Sources/VaporAPNS/APNSContainers.swift
@@ -1,6 +1,12 @@
 import Vapor
 import APNS
+#if canImport(Darwin)
 import Foundation
+#else
+// JSONEncoder / JSONDecoder is not Sendable in scf, but is in Darwin...
+// Import as `@preconcurrency` to fix warnings.
+@preconcurrency import Foundation
+#endif
 import NIO
 import NIOConcurrencyHelpers