diff --git a/src/json_u64.rs b/src/json_u64.rs
index 280bd15..01ae1d4 100644
--- a/src/json_u64.rs
+++ b/src/json_u64.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2018-2022 The MobileCoin Foundation
+// Copyright (c) 2018-2024 The MobileCoin Foundation
 
 //! Serialization and deserialization for a U64 in JSON
 
diff --git a/src/lib.rs b/src/lib.rs
index e86c772..a609fcf 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2018-2022 The MobileCoin Foundation
+// Copyright (c) 2018-2024 The MobileCoin Foundation
 
 //! Serialization and deserialization utilities for MobileCoin.