diff --git a/RoutingAlgorithms/AlternativePathRouting.h b/RoutingAlgorithms/AlternativePathRouting.h
index c29d9c411..c4a93183c 100644
--- a/RoutingAlgorithms/AlternativePathRouting.h
+++ b/RoutingAlgorithms/AlternativePathRouting.h
@@ -43,7 +43,7 @@ const double VIAPATH_ALPHA = 0.10;
 const double VIAPATH_EPSILON = 0.15; // alternative at most 15% longer
 const double VIAPATH_GAMMA = 0.75;   // alternative shares at most 75% with the shortest.
 
-template <class DataFacadeT> class AlternativeRouting : private BasicRoutingInterface<DataFacadeT>
+template <class DataFacadeT> class AlternativeRouting final : private BasicRoutingInterface<DataFacadeT>
 {
     using super = BasicRoutingInterface<DataFacadeT>;
     using EdgeData = typename DataFacadeT::EdgeData;
diff --git a/RoutingAlgorithms/ManyToManyRouting.h b/RoutingAlgorithms/ManyToManyRouting.h
index 332409a81..6761c25ca 100644
--- a/RoutingAlgorithms/ManyToManyRouting.h
+++ b/RoutingAlgorithms/ManyToManyRouting.h
@@ -39,7 +39,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <unordered_map>
 #include <vector>
 
-template <class DataFacadeT> class ManyToManyRouting : public BasicRoutingInterface<DataFacadeT>
+template <class DataFacadeT> class ManyToManyRouting final : public BasicRoutingInterface<DataFacadeT>
 {
     using super = BasicRoutingInterface<DataFacadeT>;
     using QueryHeap = SearchEngineData::QueryHeap;
diff --git a/RoutingAlgorithms/ShortestPathRouting.h b/RoutingAlgorithms/ShortestPathRouting.h
index deac8bb30..4670eedf5 100644
--- a/RoutingAlgorithms/ShortestPathRouting.h
+++ b/RoutingAlgorithms/ShortestPathRouting.h
@@ -35,7 +35,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "../DataStructures/SearchEngineData.h"
 #include "../typedefs.h"
 
-template <class DataFacadeT> class ShortestPathRouting : public BasicRoutingInterface<DataFacadeT>
+template <class DataFacadeT> class ShortestPathRouting final : public BasicRoutingInterface<DataFacadeT>
 {
     using super = BasicRoutingInterface<DataFacadeT>;
     using QueryHeap = SearchEngineData::QueryHeap;