diff --git a/README.adoc b/README.adoc
index 5529cf0..affcd64 100644
--- a/README.adoc
+++ b/README.adoc
@@ -1,3 +1,9 @@
+[NOTE]
+======
+This branch of Spring Session BOM has reached its https://github.com/spring-projects/spring-boot/wiki/Supported-Versions[End of Life], meaning that there are no further maintenance releases or security patches planned.
+Please migrate to a supported branch as soon as possible.
+======
+
 = Spring Session BOM
 
 This repository contains Spring Session Maven Bill of Materials (BOM).