diff --git a/src/3rdParty/salomesmesh/src/StdMeshers/StdMeshers_RadialPrism_3D.cpp b/src/3rdParty/salomesmesh/src/StdMeshers/StdMeshers_RadialPrism_3D.cpp
index 133b68160..b88232be1 100644
--- a/src/3rdParty/salomesmesh/src/StdMeshers/StdMeshers_RadialPrism_3D.cpp
+++ b/src/3rdParty/salomesmesh/src/StdMeshers/StdMeshers_RadialPrism_3D.cpp
@@ -45,6 +45,9 @@
 #include <BRepAdaptor_Curve.hxx>
 #include <BRepBuilderAPI_MakeEdge.hxx>
 #include <BRepTools.hxx>
+#if OCC_VERSION_HEX >= 0x060600
+#include <BRepClass3d.hxx>
+#endif
 #include <TopExp_Explorer.hxx>
 #include <TopoDS.hxx>
 #include <TopoDS_Shell.hxx>
@@ -159,7 +162,11 @@ bool StdMeshers_RadialPrism_3D::Compute(SMESH_Mesh& aMesh, const TopoDS_Shape& a
 
   // get 2 shells
   TopoDS_Solid solid = TopoDS::Solid( aShape );
+#if OCC_VERSION_HEX >= 0x060600
+  TopoDS_Shell outerShell = BRepClass3d::OuterShell( solid );
+#else
   TopoDS_Shell outerShell = BRepTools::OuterShell( solid );
+#endif
   TopoDS_Shape innerShell;
   int nbShells = 0;
   for ( TopoDS_Iterator It (solid); It.More(); It.Next(), ++nbShells )
diff --git a/src/Mod/Part/App/TopoShapeSolidPyImp.cpp b/src/Mod/Part/App/TopoShapeSolidPyImp.cpp
index 8af8b1300..f0ff38fed 100644
--- a/src/Mod/Part/App/TopoShapeSolidPyImp.cpp
+++ b/src/Mod/Part/App/TopoShapeSolidPyImp.cpp
@@ -25,6 +25,9 @@
 
 #include <BRepGProp.hxx>
 #include <BRepTools.hxx>
+#if OCC_VERSION_HEX >= 0x060600
+#include <BRepClass3d.hxx>
+#endif
 #include <GProp_GProps.hxx>
 #include <GProp_PrincipalProps.hxx>
 #include <BRepBuilderAPI_MakeSolid.hxx>
@@ -178,7 +181,11 @@ Py::Object TopoShapeSolidPy::getOuterShell(void) const
     TopoDS_Shell shell;
     const TopoDS_Shape& shape = getTopoShapePtr()->_Shape;
     if (!shape.IsNull() && shape.ShapeType() == TopAbs_SOLID)
+#if OCC_VERSION_HEX >= 0x060600
+        shell = BRepClass3d::OuterShell(TopoDS::Solid(shape));
+#else
         shell = BRepTools::OuterShell(TopoDS::Solid(shape));
+#endif
     return Py::Object(new TopoShapeShellPy(new TopoShape(shell)),true);
 }