diff --git a/README.md b/README.md
index 27e235b9d7ffe13c68f725b29d9efaf33f1a0415..c7b2fc9bc12342df9537a3dc0aafdfef2df7527a 100644
--- a/README.md
+++ b/README.md
@@ -3,3 +3,5 @@ This project provides [areaDetector](https://github.com/areaDetector/areaDetecto
 It is based on the work done by @haitaoliu in 2020 (Jira ticket [CSSOPI-297](https://jira.esss.lu.se/browse/CSSOPI-297)), which can be found unaltered in commit bc08845de0021627b7f10f83ebc2cf18547fb138.
 
 Since then some OPIs had changes commmited into upstream. A diff file is available [here](R3-12-1.diff).
+
+50a0964d4e4857e57d797624b1c3f8c2c3846d6e is the last commit in which .adl, .edl, .opi and .ui files are available.