diff --git a/scripts/openmc-track-to-vtk b/scripts/openmc-track-to-vtk
index 1761d08ba6..8db57e2a3f 100755
--- a/scripts/openmc-track-to-vtk
+++ b/scripts/openmc-track-to-vtk
@@ -89,7 +89,10 @@ def main():
     data.SetLines(cells)
 
     writer = vtk.vtkXMLPPolyDataWriter()
-    writer.SetInputData(data)
+    if vtk.vtkVersion.GetVTKMajorVersion() > 5:
+        writer.SetInputData(data)
+    else:
+        writer.SetInput(data)
     writer.SetFileName(args.out)
     writer.Write()
 
diff --git a/scripts/openmc-voxel-to-silovtk b/scripts/openmc-voxel-to-silovtk
index 633d44cb12..eb052c75fa 100755
--- a/scripts/openmc-voxel-to-silovtk
+++ b/scripts/openmc-voxel-to-silovtk
@@ -62,7 +62,10 @@ def main(file_, o):
         grid.GetCellData().AddArray(data)
 
         writer = vtk.vtkXMLImageDataWriter()
-        writer.SetInputData(grid)
+        if vtk.vtkVersion.GetVTKMajorVersion() > 5:
+            writer.SetInputData(grid)
+        else:
+            writer.SetInput(grid)
         if not o.output.endswith(".vti"):
             o.output += ".vti"
         writer.SetFileName(o.output)