diff --git a/week1_intro/deep_crossentropy_method.ipynb b/week1_intro/deep_crossentropy_method.ipynb
index 446ddebaa..3e7cfb4c9 100644
--- a/week1_intro/deep_crossentropy_method.ipynb
+++ b/week1_intro/deep_crossentropy_method.ipynb
@@ -332,9 +332,7 @@
        "<Figure size 700x700 with 1 Axes>"
       ]
      },
-     "metadata": {
-      "tags": []
-     },
+     "metadata": {},
      "output_type": "display_data"
     }
    ],
diff --git a/week1_intro/primer/recap_ml.ipynb b/week1_intro/primer/recap_ml.ipynb
index c67c789c3..f3b253878 100644
--- a/week1_intro/primer/recap_ml.ipynb
+++ b/week1_intro/primer/recap_ml.ipynb
@@ -375,9 +375,7 @@
       ]
      },
      "execution_count": null,
-     "metadata": {
-      "tags": []
-     },
+     "metadata": {},
      "output_type": "execute_result"
     }
    ],
@@ -596,9 +594,7 @@
       ]
      },
      "execution_count": null,
-     "metadata": {
-      "tags": []
-     },
+     "metadata": {},
      "output_type": "execute_result"
     }
    ],
@@ -2083,9 +2079,7 @@
       ]
      },
      "execution_count": null,
-     "metadata": {
-      "tags": []
-     },
+     "metadata": {},
      "output_type": "execute_result"
     }
    ],
@@ -2168,9 +2162,7 @@
       ]
      },
      "execution_count": null,
-     "metadata": {
-      "tags": []
-     },
+     "metadata": {},
      "output_type": "execute_result"
     },
     {
@@ -2180,9 +2172,7 @@
        "<matplotlib.figure.Figure at 0x7f2fee543518>"
       ]
      },
-     "metadata": {
-      "tags": []
-     },
+     "metadata": {},
      "output_type": "display_data"
     }
    ],
@@ -2207,9 +2197,7 @@
        "<matplotlib.figure.Figure at 0x7f2fec9032e8>"
       ]
      },
-     "metadata": {
-      "tags": []
-     },
+     "metadata": {},
      "output_type": "display_data"
     }
    ],
@@ -2232,9 +2220,7 @@
       ]
      },
      "execution_count": null,
-     "metadata": {
-      "tags": []
-     },
+     "metadata": {},
      "output_type": "execute_result"
     },
     {
@@ -2244,9 +2230,7 @@
        "<matplotlib.figure.Figure at 0x7f2fe9023048>"
       ]
      },
-     "metadata": {
-      "tags": []
-     },
+     "metadata": {},
      "output_type": "display_data"
     }
    ],
@@ -2278,9 +2262,7 @@
        "<matplotlib.figure.Figure at 0x7f2fe8f573c8>"
       ]
      },
-     "metadata": {
-      "tags": []
-     },
+     "metadata": {},
      "output_type": "display_data"
     },
     {
@@ -2292,9 +2274,7 @@
       ]
      },
      "execution_count": null,
-     "metadata": {
-      "tags": []
-     },
+     "metadata": {},
      "output_type": "execute_result"
     },
     {
@@ -2304,9 +2284,7 @@
        "<matplotlib.figure.Figure at 0x7f2fe8ed0be0>"
       ]
      },
-     "metadata": {
-      "tags": []
-     },
+     "metadata": {},
      "output_type": "display_data"
     }
    ],
diff --git a/week1_intro/primer/recap_pytorch.ipynb b/week1_intro/primer/recap_pytorch.ipynb
index fb0f7c823..b5772af1a 100644
--- a/week1_intro/primer/recap_pytorch.ipynb
+++ b/week1_intro/primer/recap_pytorch.ipynb
@@ -256,9 +256,7 @@
       ]
      },
      "execution_count": null,
-     "metadata": {
-      "tags": []
-     },
+     "metadata": {},
      "output_type": "execute_result"
     },
     {
@@ -269,8 +267,7 @@
       ]
      },
      "metadata": {
-      "needs_background": "light",
-      "tags": []
+      "needs_background": "light"
      },
      "output_type": "display_data"
     }
@@ -355,8 +352,7 @@
       ]
      },
      "metadata": {
-      "needs_background": "light",
-      "tags": []
+      "needs_background": "light"
      },
      "output_type": "display_data"
     },
@@ -441,9 +437,7 @@
        "<matplotlib.figure.Figure at 0x7fda9174f048>"
       ]
      },
-     "metadata": {
-      "tags": []
-     },
+     "metadata": {},
      "output_type": "display_data"
     }
    ],
@@ -559,9 +553,7 @@
       ]
      },
      "execution_count": null,
-     "metadata": {
-      "tags": []
-     },
+     "metadata": {},
      "output_type": "execute_result"
     }
    ],
@@ -1042,9 +1034,7 @@
        "<matplotlib.figure.Figure at 0x7f625a9f4278>"
       ]
      },
-     "metadata": {
-      "tags": []
-     },
+     "metadata": {},
      "output_type": "display_data"
     }
    ],
diff --git a/week2_model_based/practice_vi.ipynb b/week2_model_based/practice_vi.ipynb
index 973579327..4c4a5ee64 100644
--- a/week2_model_based/practice_vi.ipynb
+++ b/week2_model_based/practice_vi.ipynb
@@ -352,9 +352,7 @@
        "<graphviz.dot.Digraph at 0x7f729b9db7b8>"
       ]
      },
-     "metadata": {
-      "tags": []
-     },
+     "metadata": {},
      "output_type": "display_data"
     }
    ],
diff --git a/week3_model_free/qlearning.ipynb b/week3_model_free/qlearning.ipynb
index 6b5e0d15d..ee2509357 100644
--- a/week3_model_free/qlearning.ipynb
+++ b/week3_model_free/qlearning.ipynb
@@ -243,9 +243,7 @@
        "<Figure size 432x288 with 1 Axes>"
       ]
      },
-     "metadata": {
-      "tags": []
-     },
+     "metadata": {},
      "output_type": "display_data"
     }
    ],
@@ -355,8 +353,7 @@
       ]
      },
      "metadata": {
-      "needs_background": "light",
-      "tags": []
+      "needs_background": "light"
      },
      "output_type": "display_data"
     }
diff --git a/week4_approx/dqn_atari_pytorch.ipynb b/week4_approx/dqn_atari_pytorch.ipynb
index cf5305745..1d65241c1 100644
--- a/week4_approx/dqn_atari_pytorch.ipynb
+++ b/week4_approx/dqn_atari_pytorch.ipynb
@@ -122,9 +122,7 @@
        "<Figure size 1152x648 with 10 Axes>"
       ]
      },
-     "metadata": {
-      "tags": []
-     },
+     "metadata": {},
      "output_type": "display_data"
     }
    ],
diff --git a/week6_outro/bandits.ipynb b/week6_outro/bandits.ipynb
index aff24bff3..020192dad 100644
--- a/week6_outro/bandits.ipynb
+++ b/week6_outro/bandits.ipynb
@@ -320,9 +320,7 @@
        "<matplotlib.figure.Figure at 0x7fa18f3a7da0>"
       ]
      },
-     "metadata": {
-      "tags": []
-     },
+     "metadata": {},
      "output_type": "display_data"
     }
    ],