diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 8dc4307..65a8a82 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,3 +1,11 @@
+#### 1.5.18 April 8 2024 ####
+Upgrade to Akka 1.5.18 dependency
+Upgrade to EventStore 23.2.1 dependency
+
+**Breaking Changes**
+This is a complete rewrite of the library to use Akka.NET 1.5.18 and EventStore 23.2.1. The library is now net6.0+.
+See README for more details.
+
 #### 1.4.0 January 16 2019 ####
 Serialization changes to match 1.4 API
 Upgrade to Akka 1.4 dependency