diff --git a/tasks/task_07_CSG_cell_tally_spectra/1_example_neutron_flux_and_units.ipynb b/tasks/task_07_CSG_cell_tally_spectra/1_example_neutron_flux_and_units.ipynb
index 897a4280..d7d8c7dc 100644
--- a/tasks/task_07_CSG_cell_tally_spectra/1_example_neutron_flux_and_units.ipynb
+++ b/tasks/task_07_CSG_cell_tally_spectra/1_example_neutron_flux_and_units.ipynb
@@ -115,7 +115,7 @@
     "model = openmc.model.Model(my_geometry, my_materials, my_settings, my_tallies)\n",
     "\n",
     "# remove old files and runs OpenMC\n",
-    "!rm *.h5\n",
+    "!rm *.h5 || true\n",
     "results_filename = model.run()"
    ]
   },
diff --git a/tasks/task_07_CSG_cell_tally_spectra/2_example_neutron_spectra_on_cell.ipynb b/tasks/task_07_CSG_cell_tally_spectra/2_example_neutron_spectra_on_cell.ipynb
index 92268920..52e2c62d 100644
--- a/tasks/task_07_CSG_cell_tally_spectra/2_example_neutron_spectra_on_cell.ipynb
+++ b/tasks/task_07_CSG_cell_tally_spectra/2_example_neutron_spectra_on_cell.ipynb
@@ -125,7 +125,7 @@
     "model = openmc.model.Model(my_geometry, my_materials, my_settings, my_tallies)\n",
     "\n",
     "# remove old files and runs OpenMC\n",
-    "!rm *.h5\n",
+    "!rm *.h5 || true\n",
     "results_filename = model.run()"
    ]
   },
diff --git a/tasks/task_07_CSG_cell_tally_spectra/3_example_neutron_spectra_on_surface.ipynb b/tasks/task_07_CSG_cell_tally_spectra/3_example_neutron_spectra_on_surface.ipynb
index 71b98653..399d493d 100644
--- a/tasks/task_07_CSG_cell_tally_spectra/3_example_neutron_spectra_on_surface.ipynb
+++ b/tasks/task_07_CSG_cell_tally_spectra/3_example_neutron_spectra_on_surface.ipynb
@@ -158,7 +158,7 @@
     "model = openmc.model.Model(my_geometry, my_materials, my_settings, my_tallies)\n",
     "\n",
     "# remove old files and runs OpenMC\n",
-    "!rm *.h5\n",
+    "!rm *.h5 || true\n",
     "results_filename = model.run()"
    ]
   },
diff --git a/tasks/task_07_CSG_cell_tally_spectra/4_example_photon_spectra.ipynb b/tasks/task_07_CSG_cell_tally_spectra/4_example_photon_spectra.ipynb
index 9c9c1313..b54640f5 100644
--- a/tasks/task_07_CSG_cell_tally_spectra/4_example_photon_spectra.ipynb
+++ b/tasks/task_07_CSG_cell_tally_spectra/4_example_photon_spectra.ipynb
@@ -122,7 +122,7 @@
     "model = openmc.model.Model(my_geometry, my_materials, my_settings, my_tallies)\n",
     "\n",
     "# remove old files and runs OpenMC\n",
-    "!rm *.h5\n",
+    "!rm *.h5 || true\n",
     "results_filename = model.run()"
    ]
   },
diff --git a/tasks/task_07_CSG_cell_tally_spectra/5_neutron_energy_loss_plot.ipynb b/tasks/task_07_CSG_cell_tally_spectra/5_neutron_energy_loss_plot.ipynb
index 58a7cf01..7fc28891 100644
--- a/tasks/task_07_CSG_cell_tally_spectra/5_neutron_energy_loss_plot.ipynb
+++ b/tasks/task_07_CSG_cell_tally_spectra/5_neutron_energy_loss_plot.ipynb
@@ -112,7 +112,7 @@
    "outputs": [],
    "source": [
     "# remove old summary and statepoint files\n",
-    "!rm *.h5\n",
+    "!rm *.h5 || true\n",
     "\n",
     "for element, color in zip([liquid_hydrogen, tungsten], [\"red\", \"blue\"]):\n",
     "    plt.plot([0], label=element, color=color)\n",