diff --git a/src/hdf5_interface.F90 b/src/hdf5_interface.F90
index 1aa6ac8954..c6ec49c4d5 100644
--- a/src/hdf5_interface.F90
+++ b/src/hdf5_interface.F90
@@ -1072,6 +1072,8 @@ contains
     ! Close tallies group
     call h5gclose_f(tallies_group, hdf5_err)
 
+    ! TODO: Use parallel HDF5 to write source bank
+
     ! Write source bank
     dims(1) = work
     call h5screate_simple_f(1, dims, dspace, hdf5_err)
@@ -1180,6 +1182,8 @@ contains
       end do TALLIES_LOOP
     end if
 
+    ! TODO: Use parallel HDF5 to read source bank in parallel
+
     ! Open dataset for source bank
     call h5dopen_f(hdf5_state_point, "source_bank", dset, hdf5_err)