diff --git a/Sources/APNS/APNSClient.swift b/Sources/APNS/APNSClient.swift
index e6beebe..f17bfe7 100644
--- a/Sources/APNS/APNSClient.swift
+++ b/Sources/APNS/APNSClient.swift
@@ -135,6 +135,7 @@ public final class APNSClient<Decoder: APNSJSONDecoder, Encoder: APNSJSONEncoder
     }
 }
 
+extension APNSClient: Sendable where Decoder: Sendable, Encoder: Sendable {}
 
 // MARK: - Raw sending