diff --git a/io.catenax.item_stock/RELEASE_NOTES.md b/io.catenax.item_stock/RELEASE_NOTES.md
index 04540925..7f2a4e8b 100644
--- a/io.catenax.item_stock/RELEASE_NOTES.md
+++ b/io.catenax.item_stock/RELEASE_NOTES.md
@@ -1,6 +1,14 @@
 # Changelog
 All notable changes to this model will be documented in this file.
 
+## [2.0.0] - 2023-10-09
+- updated model to also cover customer side
+- renamed product stock to item stock (aspect)
+- usage of shared aspect 
+  - for uuid for materialNumberCatenaX
+  - for Qquantity characteristic
+- positions for customer side stock MAY NOT contain order position references 
+
 ## [1.0.0] - 2023-06-05
 ### Added
 - initial model