diff --git a/DetectorDescription/GeoModel/GeoModelExamples/src/CentralScrutinizer.h b/DetectorDescription/GeoModel/GeoModelExamples/src/CentralScrutinizer.h
index 4b08feb084e0fa3356baffb5ccc155e8fafa3256..965152d5020c385f6b4450ad7d6f61233335b7a5 100755
--- a/DetectorDescription/GeoModel/GeoModelExamples/src/CentralScrutinizer.h
+++ b/DetectorDescription/GeoModel/GeoModelExamples/src/CentralScrutinizer.h
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
 */
 
 #ifndef CentralScrutinizer_h
@@ -10,7 +10,7 @@
     #include "Identifier/Identifier.h"
 #endif
 
-class CentralScrutinizer : public GeoVDetectorElement
+class CentralScrutinizer final : public GeoVDetectorElement
 {
  public:
   CentralScrutinizer(const GeoVFullPhysVol *fullPhysVol);
diff --git a/DetectorDescription/GeoModel/GeoModelExamples/src/ForwardScrutinizer.h b/DetectorDescription/GeoModel/GeoModelExamples/src/ForwardScrutinizer.h
index e9ad0b340a87152cb63648526ed35fbcde17f99b..ab22e33ec5f4741a61daa435291cdf8db173fcee 100755
--- a/DetectorDescription/GeoModel/GeoModelExamples/src/ForwardScrutinizer.h
+++ b/DetectorDescription/GeoModel/GeoModelExamples/src/ForwardScrutinizer.h
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
 */
 
 #ifndef ForwardScrutinizer_h
@@ -10,7 +10,7 @@
     #include "Identifier/Identifier.h"
 #endif
 
-class ForwardScrutinizer : public GeoVDetectorElement
+class ForwardScrutinizer final : public GeoVDetectorElement
 {
  public:
   ForwardScrutinizer(const GeoVFullPhysVol *fullPhysVol);
diff --git a/DetectorDescription/GeoModel/GeoModelExamples/src/ToyDetectorTool.h b/DetectorDescription/GeoModel/GeoModelExamples/src/ToyDetectorTool.h
index 029f63c49fc934d79f34adf4daa86d2f245aeecb..bcc2c2a1992202deb5defb8a3845d00a09fa909f 100755
--- a/DetectorDescription/GeoModel/GeoModelExamples/src/ToyDetectorTool.h
+++ b/DetectorDescription/GeoModel/GeoModelExamples/src/ToyDetectorTool.h
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
 */
 
 #ifndef GEOMODELEXAMPLES_TOYDETECTORTOOL_H
@@ -10,7 +10,7 @@
 #include "GeoModelUtilities/GeoModelTool.h"
 #include "GeoModelKernel/GeoPVConstLink.h"
 
-class ToyDetectorTool : public GeoModelTool 
+class ToyDetectorTool final : public GeoModelTool 
 {
  public:
   ToyDetectorTool( const std::string& type, const std::string& name, const IInterface* parent );