diff --git a/docs/architecture/adr-020-protobuf-transaction-encoding.md b/docs/architecture/adr-020-protobuf-transaction-encoding.md
index 6fd37bda8c..75cc85e32d 100644
--- a/docs/architecture/adr-020-protobuf-transaction-encoding.md
+++ b/docs/architecture/adr-020-protobuf-transaction-encoding.md
@@ -3,6 +3,7 @@
 ## Changelog
 
 - 2020 March 06: Initial Draft
+- 2020 March 12: API Updates
 
 ## Status