diff --git a/jhdf/src/main/java/io/jhdf/AbstractWritableNode.java b/jhdf/src/main/java/io/jhdf/AbstractWritableNode.java
index fc0b9509..d41f34a0 100644
--- a/jhdf/src/main/java/io/jhdf/AbstractWritableNode.java
+++ b/jhdf/src/main/java/io/jhdf/AbstractWritableNode.java
@@ -1,3 +1,13 @@
+/*
+ * This file is part of jHDF. A pure Java library for accessing HDF5 files.
+ *
+ * http://jhdf.io
+ *
+ * Copyright (c) 2023 James Mudd
+ *
+ * MIT License see 'LICENSE' file
+ */
+
 package io.jhdf;
 
 import io.jhdf.api.Attribute;