diff --git a/CHANGELOG.md b/CHANGELOG.md
index 89d66d66bd..eef6a18202 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,13 +10,14 @@ _**For better traceability add the corresponding GitHub issue number in each cha
 
 ## Changed
 
--  Removed obsolete entries from acceptedPolicies configuration. #530
+- Removed obsolete entries from acceptedPolicies configuration. #530
 - Support of building relationships based on SingleLevelUsageAsBuilt v3.0.0 #558
 - Support of building relationships based on SingleLevelBomAsPlanned v3.0.0 #558
 
 ### Fixed
 
 - Update bouncycastle to 1.78 to fix CVE's.
+- Fixed validation of json-schemas - IRS is creating tombstone instead collecting Submodel payload, when it not passes validation of schema #522
 
 
 ## [5.0.0] - 2024-04-16