diff --git a/include/openmc/constants.h b/include/openmc/constants.h
index 5a4c169111..067e6431a5 100644
--- a/include/openmc/constants.h
+++ b/include/openmc/constants.h
@@ -33,7 +33,7 @@ constexpr std::array<int, 2> VERSION_PARTICLE_RESTART {2, 0};
 constexpr std::array<int, 2> VERSION_TRACK {2, 0};
 constexpr std::array<int, 2> VERSION_SUMMARY {6, 0};
 constexpr std::array<int, 2> VERSION_VOLUME {1, 0};
-constexpr std::array<int, 2> VERSION_VOXEL {1, 1};
+constexpr std::array<int, 2> VERSION_VOXEL {2, 0};
 constexpr std::array<int, 2> VERSION_MGXS_LIBRARY {1, 0};
 constexpr char VERSION_MULTIPOLE[] {"v0.2"};
 
diff --git a/scripts/openmc-voxel-to-vtk b/scripts/openmc-voxel-to-vtk
index 699f5a015c..c7f5ffa1a1 100755
--- a/scripts/openmc-voxel-to-vtk
+++ b/scripts/openmc-voxel-to-vtk
@@ -8,7 +8,7 @@ import numpy as np
 import h5py
 import vtk
 
-_min_version = (1,1)
+_min_version = (2,0)
 
 
 def main():