diff --git a/src/Debug.hpp b/src/Debug.hpp
index 4c966d5..3a1a769 100644
--- a/src/Debug.hpp
+++ b/src/Debug.hpp
@@ -1,10 +1,10 @@
 /*
- * Copyright (c)2013-2020 ZeroTier, Inc.
+ * Copyright (c)2013-2021 ZeroTier, Inc.
  *
  * Use of this software is governed by the Business Source License included
  * in the LICENSE.TXT file in the project's root directory.
  *
- * Change Date: 2024-01-01
+ * Change Date: 2025-01-01
  *
  * On the date above, in accordance with the Business Source License, use
  * of this software will be governed by version 2.0 of the Apache License.
diff --git a/src/Events.cpp b/src/Events.cpp
index 4025f6a..d3f1154 100644
--- a/src/Events.cpp
+++ b/src/Events.cpp
@@ -1,10 +1,10 @@
 /*
- * Copyright (c)2013-2020 ZeroTier, Inc.
+ * Copyright (c)2013-2021 ZeroTier, Inc.
  *
  * Use of this software is governed by the Business Source License included
  * in the LICENSE.TXT file in the project's root directory.
  *
- * Change Date: 2024-01-01
+ * Change Date: 2025-01-01
  *
  * On the date above, in accordance with the Business Source License, use
  * of this software will be governed by version 2.0 of the Apache License.
diff --git a/src/Events.hpp b/src/Events.hpp
index 563140a..fdb9bd7 100644
--- a/src/Events.hpp
+++ b/src/Events.hpp
@@ -1,10 +1,10 @@
 /*
- * Copyright (c)2013-2020 ZeroTier, Inc.
+ * Copyright (c)2013-2021 ZeroTier, Inc.
  *
  * Use of this software is governed by the Business Source License included
  * in the LICENSE.TXT file in the project's root directory.
  *
- * Change Date: 2024-01-01
+ * Change Date: 2025-01-01
  *
  * On the date above, in accordance with the Business Source License, use
  * of this software will be governed by version 2.0 of the Apache License.
diff --git a/src/Sockets.cpp b/src/Sockets.cpp
index 8c8df85..29c4429 100644
--- a/src/Sockets.cpp
+++ b/src/Sockets.cpp
@@ -1,10 +1,10 @@
 /*
- * Copyright (c)2013-2020 ZeroTier, Inc.
+ * Copyright (c)2013-2021 ZeroTier, Inc.
  *
  * Use of this software is governed by the Business Source License included
  * in the LICENSE.TXT file in the project's root directory.
  *
- * Change Date: 2024-01-01
+ * Change Date: 2025-01-01
  *
  * On the date above, in accordance with the Business Source License, use
  * of this software will be governed by version 2.0 of the Apache License.
diff --git a/src/VirtualTap.cpp b/src/VirtualTap.cpp
index 35344c4..e7c34ec 100644
--- a/src/VirtualTap.cpp
+++ b/src/VirtualTap.cpp
@@ -1,10 +1,10 @@
 /*
- * Copyright (c)2013-2020 ZeroTier, Inc.
+ * Copyright (c)2013-2021 ZeroTier, Inc.
  *
  * Use of this software is governed by the Business Source License included
  * in the LICENSE.TXT file in the project's root directory.
  *
- * Change Date: 2024-01-01
+ * Change Date: 2025-01-01
  *
  * On the date above, in accordance with the Business Source License, use
  * of this software will be governed by version 2.0 of the Apache License.
diff --git a/src/VirtualTap.hpp b/src/VirtualTap.hpp
index be4660d..a3049f5 100644
--- a/src/VirtualTap.hpp
+++ b/src/VirtualTap.hpp
@@ -1,10 +1,10 @@
 /*
- * Copyright (c)2013-2020 ZeroTier, Inc.
+ * Copyright (c)2013-2021 ZeroTier, Inc.
  *
  * Use of this software is governed by the Business Source License included
  * in the LICENSE.TXT file in the project's root directory.
  *
- * Change Date: 2024-01-01
+ * Change Date: 2025-01-01
  *
  * On the date above, in accordance with the Business Source License, use
  * of this software will be governed by version 2.0 of the Apache License.
diff --git a/src/bindings/csharp/Constants.cs b/src/bindings/csharp/Constants.cs
index cce07ea..69dcb3a 100644
--- a/src/bindings/csharp/Constants.cs
+++ b/src/bindings/csharp/Constants.cs
@@ -1,10 +1,10 @@
 /*
- * Copyright (c)2013-2020 ZeroTier, Inc.
+ * Copyright (c)2013-2021 ZeroTier, Inc.
  *
  * Use of this software is governed by the Business Source License included
  * in the LICENSE.TXT file in the project's root directory.
  *
- * Change Date: 2024-01-01
+ * Change Date: 2025-01-01
  *
  * On the date above, in accordance with the Business Source License, use
  * of this software will be governed by version 2.0 of the Apache License.
diff --git a/src/bindings/csharp/Event.cs b/src/bindings/csharp/Event.cs
index e8c24c0..db5e18d 100644
--- a/src/bindings/csharp/Event.cs
+++ b/src/bindings/csharp/Event.cs
@@ -1,10 +1,10 @@
 /*
- * Copyright (c)2013-2020 ZeroTier, Inc.
+ * Copyright (c)2013-2021 ZeroTier, Inc.
  *
  * Use of this software is governed by the Business Source License included
  * in the LICENSE.TXT file in the project's root directory.
  *
- * Change Date: 2024-01-01
+ * Change Date: 2025-01-01
  *
  * On the date above, in accordance with the Business Source License, use
  * of this software will be governed by version 2.0 of the Apache License.
diff --git a/src/bindings/csharp/Node.cs b/src/bindings/csharp/Node.cs
index f859ab9..3771af7 100644
--- a/src/bindings/csharp/Node.cs
+++ b/src/bindings/csharp/Node.cs
@@ -1,10 +1,10 @@
 /*
- * Copyright (c)2013-2020 ZeroTier, Inc.
+ * Copyright (c)2013-2021 ZeroTier, Inc.
  *
  * Use of this software is governed by the Business Source License included
  * in the LICENSE.TXT file in the project's root directory.
  *
- * Change Date: 2024-01-01
+ * Change Date: 2025-01-01
  *
  * On the date above, in accordance with the Business Source License, use
  * of this software will be governed by version 2.0 of the Apache License.
diff --git a/src/bindings/csharp/Socket.cs b/src/bindings/csharp/Socket.cs
index 890d16c..4de872b 100644
--- a/src/bindings/csharp/Socket.cs
+++ b/src/bindings/csharp/Socket.cs
@@ -1,10 +1,10 @@
 /*
- * Copyright (c)2013-2020 ZeroTier, Inc.
+ * Copyright (c)2013-2021 ZeroTier, Inc.
  *
  * Use of this software is governed by the Business Source License included
  * in the LICENSE.TXT file in the project's root directory.
  *
- * Change Date: 2024-01-01
+ * Change Date: 2025-01-01
  *
  * On the date above, in accordance with the Business Source License, use
  * of this software will be governed by version 2.0 of the Apache License.
diff --git a/src/bindings/csharp/SocketException.cs b/src/bindings/csharp/SocketException.cs
index 0b47cd2..40dfc5f 100644
--- a/src/bindings/csharp/SocketException.cs
+++ b/src/bindings/csharp/SocketException.cs
@@ -1,10 +1,10 @@
 /*
- * Copyright (c)2013-2020 ZeroTier, Inc.
+ * Copyright (c)2013-2021 ZeroTier, Inc.
  *
  * Use of this software is governed by the Business Source License included
  * in the LICENSE.TXT file in the project's root directory.
  *
- * Change Date: 2024-01-01
+ * Change Date: 2025-01-01
  *
  * On the date above, in accordance with the Business Source License, use
  * of this software will be governed by version 2.0 of the Apache License.