diff --git a/aws/documentation/transit-gateway/networks.md b/aws/documentation/transit-gateway/networks.md
index 0ab433b7..dacfc171 100644
--- a/aws/documentation/transit-gateway/networks.md
+++ b/aws/documentation/transit-gateway/networks.md
@@ -60,3 +60,8 @@
 ## BCC 172.24.0.0/16
 ## NPC 172.25.0.0/16
 ## HQ 172.27.0.0/16
+
+# CHANGELOG
+
+- 1.0.0 -- 2025-03-21
+  - initial