diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..8522823
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,5 @@
+# Changelog
+
+## v0.1.0
+
+Initial release
diff --git a/index.js b/index.js
index f6497e8..061657c 100644
--- a/index.js
+++ b/index.js
@@ -1,6 +1,9 @@
 // SPDX-FileCopyrightText: 2024 SmartRent
 //
 // SPDX-License-Identifier: Apache-2.0
+//
+// https://github.com/nerves-networking/whenwhere
+// v0.1.0
 function maybeAdd(field, contents, key) {
     if (field) {
         contents[key] = field.value;