diff --git a/notebooks/MR/Gadgetron/fully_sampled_recon_single_chain.ipynb b/notebooks/MR/Gadgetron/fully_sampled_recon_single_chain.ipynb
index f61183b6..67e926c9 100644
--- a/notebooks/MR/Gadgetron/fully_sampled_recon_single_chain.ipynb
+++ b/notebooks/MR/Gadgetron/fully_sampled_recon_single_chain.ipynb
@@ -134,9 +134,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
-   "language": "python",
-   "name": "python2"
+   "language": "python"
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   "language_info": {
    "codemirror_mode": {
diff --git a/notebooks/MR/Gadgetron/fully_sampled_recon_single_chain_short.ipynb b/notebooks/MR/Gadgetron/fully_sampled_recon_single_chain_short.ipynb
index 14ae2928..1bba743c 100644
--- a/notebooks/MR/Gadgetron/fully_sampled_recon_single_chain_short.ipynb
+++ b/notebooks/MR/Gadgetron/fully_sampled_recon_single_chain_short.ipynb
@@ -91,9 +91,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
-   "language": "python",
-   "name": "python2"
+   "language": "python"
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   "language_info": {
    "codemirror_mode": {
diff --git a/notebooks/MR/Gadgetron/fully_sampled_recon_three_chains.ipynb b/notebooks/MR/Gadgetron/fully_sampled_recon_three_chains.ipynb
index 03c9c7d2..b4c016aa 100644
--- a/notebooks/MR/Gadgetron/fully_sampled_recon_three_chains.ipynb
+++ b/notebooks/MR/Gadgetron/fully_sampled_recon_three_chains.ipynb
@@ -142,9 +142,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
-   "language": "python",
-   "name": "python2"
+   "language": "python"
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   "language_info": {
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diff --git a/notebooks/MR/Gadgetron/grappa_detail.ipynb b/notebooks/MR/Gadgetron/grappa_detail.ipynb
index 7d0c5059..8513fad7 100644
--- a/notebooks/MR/Gadgetron/grappa_detail.ipynb
+++ b/notebooks/MR/Gadgetron/grappa_detail.ipynb
@@ -189,9 +189,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
-   "language": "python",
-   "name": "python2"
+   "language": "python"
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   "language_info": {
    "codemirror_mode": {
diff --git a/notebooks/MR/acquisition_data.ipynb b/notebooks/MR/acquisition_data.ipynb
index 2db5ed71..0c472ddd 100644
--- a/notebooks/MR/acquisition_data.ipynb
+++ b/notebooks/MR/acquisition_data.ipynb
@@ -209,9 +209,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
-   "language": "python",
-   "name": "python2"
+   "language": "python"
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   "language_info": {
    "codemirror_mode": {
diff --git a/notebooks/MR/acquisition_model.ipynb b/notebooks/MR/acquisition_model.ipynb
index 3b1f0a1f..d81f4109 100644
--- a/notebooks/MR/acquisition_model.ipynb
+++ b/notebooks/MR/acquisition_model.ipynb
@@ -157,9 +157,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
-   "language": "python",
-   "name": "python2"
+   "language": "python"
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   "language_info": {
    "codemirror_mode": {
diff --git a/notebooks/MR/fully_sampled_recon.ipynb b/notebooks/MR/fully_sampled_recon.ipynb
index 2d295f92..4a6939b3 100644
--- a/notebooks/MR/fully_sampled_recon.ipynb
+++ b/notebooks/MR/fully_sampled_recon.ipynb
@@ -121,9 +121,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
-   "language": "python",
-   "name": "python2"
+   "language": "python"
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   "language_info": {
    "codemirror_mode": {
diff --git a/notebooks/MR/grappa_and_steepest_descent.ipynb b/notebooks/MR/grappa_and_steepest_descent.ipynb
index 35a12dc5..bc7ef44b 100644
--- a/notebooks/MR/grappa_and_steepest_descent.ipynb
+++ b/notebooks/MR/grappa_and_steepest_descent.ipynb
@@ -131,9 +131,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
-   "language": "python",
-   "name": "python2"
+   "language": "python"
   },
   "language_info": {
    "codemirror_mode": {
diff --git a/notebooks/MR/grappa_basic.ipynb b/notebooks/MR/grappa_basic.ipynb
index ca8eff89..27e23232 100644
--- a/notebooks/MR/grappa_basic.ipynb
+++ b/notebooks/MR/grappa_basic.ipynb
@@ -129,9 +129,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
-   "language": "python",
-   "name": "python2"
+   "language": "python"
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   "language_info": {
    "codemirror_mode": {
diff --git a/notebooks/MR/interactive/a_fully_sampled.ipynb b/notebooks/MR/interactive/a_fully_sampled.ipynb
index eeb030fc..0d5f32cc 100644
--- a/notebooks/MR/interactive/a_fully_sampled.ipynb
+++ b/notebooks/MR/interactive/a_fully_sampled.ipynb
@@ -444,9 +444,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
-   "language": "python",
-   "name": "python3"
+   "language": "python"
   },
   "language_info": {
    "codemirror_mode": {
diff --git a/notebooks/MR/interactive/b_kspace_filter.ipynb b/notebooks/MR/interactive/b_kspace_filter.ipynb
index 8111744c..cb246501 100644
--- a/notebooks/MR/interactive/b_kspace_filter.ipynb
+++ b/notebooks/MR/interactive/b_kspace_filter.ipynb
@@ -423,9 +423,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
-   "language": "python",
-   "name": "python3"
+   "language": "python"
   },
   "language_info": {
    "codemirror_mode": {
diff --git a/notebooks/MR/interactive/c_coil_combination.ipynb b/notebooks/MR/interactive/c_coil_combination.ipynb
index 2149f5cc..ac0a2e70 100644
--- a/notebooks/MR/interactive/c_coil_combination.ipynb
+++ b/notebooks/MR/interactive/c_coil_combination.ipynb
@@ -405,9 +405,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
-   "language": "python",
-   "name": "python3"
+   "language": "python"
   },
   "language_info": {
    "codemirror_mode": {
diff --git a/notebooks/MR/interactive/d_undersampled_reconstructions.ipynb b/notebooks/MR/interactive/d_undersampled_reconstructions.ipynb
index 14bd869c..831cd3ce 100644
--- a/notebooks/MR/interactive/d_undersampled_reconstructions.ipynb
+++ b/notebooks/MR/interactive/d_undersampled_reconstructions.ipynb
@@ -1139,9 +1139,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
-   "language": "python",
-   "name": "python3"
+   "language": "python"
   },
   "language_info": {
    "codemirror_mode": {
diff --git a/notebooks/MR/tools/acqh5info.ipynb b/notebooks/MR/tools/acqh5info.ipynb
index 1cfbc99c..67d20459 100644
--- a/notebooks/MR/tools/acqh5info.ipynb
+++ b/notebooks/MR/tools/acqh5info.ipynb
@@ -53,9 +53,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
-   "language": "python",
-   "name": "python2"
+   "language": "python"
   },
   "language_info": {
    "codemirror_mode": {
diff --git a/notebooks/MR/tools/im5info.ipynb b/notebooks/MR/tools/im5info.ipynb
index 8f4af0ac..44898236 100644
--- a/notebooks/MR/tools/im5info.ipynb
+++ b/notebooks/MR/tools/im5info.ipynb
@@ -56,9 +56,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
-   "language": "python",
-   "name": "python2"
+   "language": "python"
   },
   "language_info": {
    "codemirror_mode": {
diff --git a/notebooks/PET/MAPEM.ipynb b/notebooks/PET/MAPEM.ipynb
index f0b1a744..f174b4c5 100644
--- a/notebooks/PET/MAPEM.ipynb
+++ b/notebooks/PET/MAPEM.ipynb
@@ -400,9 +400,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
-   "language": "python",
-   "name": "python2"
+   "language": "python"
   },
   "language_info": {
    "codemirror_mode": {
diff --git a/notebooks/PET/ML_reconstruction.ipynb b/notebooks/PET/ML_reconstruction.ipynb
index 89cce1dc..2ef286e7 100644
--- a/notebooks/PET/ML_reconstruction.ipynb
+++ b/notebooks/PET/ML_reconstruction.ipynb
@@ -671,9 +671,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
-   "language": "python",
-   "name": "python2"
+   "language": "python"
   },
   "language_info": {
    "codemirror_mode": {
diff --git a/notebooks/PET/display_and_projection.ipynb b/notebooks/PET/display_and_projection.ipynb
index e82c74f0..ca9b6e11 100644
--- a/notebooks/PET/display_and_projection.ipynb
+++ b/notebooks/PET/display_and_projection.ipynb
@@ -445,9 +445,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
-   "language": "python",
-   "name": "python2"
+   "language": "python"
   },
   "language_info": {
    "codemirror_mode": {
diff --git a/notebooks/PET/image_creation_and_simulation.ipynb b/notebooks/PET/image_creation_and_simulation.ipynb
index 22243c65..4a82a243 100644
--- a/notebooks/PET/image_creation_and_simulation.ipynb
+++ b/notebooks/PET/image_creation_and_simulation.ipynb
@@ -390,9 +390,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
-   "language": "python",
-   "name": "python3"
+   "language": "python"
   },
   "language_info": {
    "codemirror_mode": {
diff --git a/notebooks/PET/reconstruct_measured_data.ipynb b/notebooks/PET/reconstruct_measured_data.ipynb
index b775c834..3876a95a 100644
--- a/notebooks/PET/reconstruct_measured_data.ipynb
+++ b/notebooks/PET/reconstruct_measured_data.ipynb
@@ -538,9 +538,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
-   "language": "python",
-   "name": "python2"
+   "language": "python"
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   "language_info": {
    "codemirror_mode": {
diff --git a/notebooks/Reg/sirf_registration.ipynb b/notebooks/Reg/sirf_registration.ipynb
index 3a07e057..2a0e3dc0 100644
--- a/notebooks/Reg/sirf_registration.ipynb
+++ b/notebooks/Reg/sirf_registration.ipynb
@@ -288,9 +288,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
-   "language": "python",
-   "name": "python3"
+   "language": "python"
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   "language_info": {
    "codemirror_mode": {