diff --git a/CHANGELOG.md b/CHANGELOG.md
index e065ebb5b..76b7e6d65 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,20 +20,25 @@ it in future.
 * Add `.git-blame-ignore-revs` to allow automatic reformatting etc. without polluting git blame
 * Automatically built documentation using Doxygen
 * Add CODEOWNERS file to automatically trigger reviews by the relevant experts
+* Add different configuration files for vacuum /helium for the Decay Vessel
 
 ### Fixed
 
 * Remove trailing whitespace and fix line endings
 * Fix compilation warnings due to deprecations #469
 * Fix issue with SST parameters #489
+* Cleaned up Veto Implementation
 
 ### Changed
 
 * Update getGeoInformation command line interface
 * Update SST geometry constants #483
+* Decay Vessel configuration now imported from a yaml file
+* Geometry of Decay Vessel updated to new design
 
 ### Removed
 
 * Remove obsolete files related to old ways of installing or testing FairShip
 * Remove uses of future and past modules #473
 * Remove Geant3 dependency
+
diff --git a/geometry/veto_config_vacuums.yaml b/geometry/veto_config_vacuums.yaml
index 4eda807a9..7d07c47b2 100644
--- a/geometry/veto_config_vacuums.yaml
+++ b/geometry/veto_config_vacuums.yaml
@@ -1,17 +1,17 @@
-# Configuration of Decay Vessel for FairShip ( Naples Design)
+#Vacuum Configuration of Decay Vessel for FairShip ( Naples Design)
 
 
 z: 0.0
 innerSupport: 2 # cm
-innerSupportMed: "Aluminum"
+innerSupportMed: "steel"
 outerSupport: 2 # cm
-outerSupportMed: "Aluminum"
+outerSupportMed: "steel"
 lidThickness: 0.0  # cm
 sensitiveThickness: 20  # cm
 sensitiveMed: "Scintillator"
 decayMed: "vacuums" 
 rib: 1.5  # cm
-ribMed: "Aluminum"
+ribMed: "steel"
 xstartInner : 100.0 # cm
 ystartInner : 270.0 # cm
 xendInner : 400.0 # cm        #FocusLineX at z= target.z0 + 16.8m
diff --git a/veto/veto.cxx b/veto/veto.cxx
index 07eba6406..b149841f8 100644
--- a/veto/veto.cxx
+++ b/veto/veto.cxx
@@ -1055,6 +1055,7 @@ void veto::ConstructGeometry()
     InitMedium("Aluminum");
     InitMedium("helium");
     InitMedium("Scintillator");
+    InitMedium("steel");
 
     gGeoManager->SetNsegments(100);