diff --git a/README.md b/README.md
index 4c9117b..96fef69 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,7 @@
+# DEPRECATED
+
+Viewing and releasing files now happens via https://github.com/opensafely-core/airlock
+
 # release-hatch
 
 This provides a small API to authenicate and serve medium-privacy files in TRE