diff --git a/book/_toc.yml b/book/_toc.yml
index fff9995..ea6fe03 100644
--- a/book/_toc.yml
+++ b/book/_toc.yml
@@ -49,7 +49,7 @@ parts:
 
     - file: notebook_5_figures/PythonNotebook5_first_page.ipynb
       sections:
-        - file: notebook_5_figures/PythonNotebook5_matplotlib.ipynb
+        # - file: notebook_5_figures/PythonNotebook5_matplotlib.ipynb
         - file: exercise_notebooks/exercise_notebook_5_figures.ipynb
 
   #   - file: notebook_6_numpy/PythonNotebook6_first_page.ipynb
diff --git a/book/exercise_notebooks/exercise_notebook_5_figures.ipynb b/book/exercise_notebooks/exercise_notebook_5_figures.ipynb
index 9652116..0b07c50 100644
--- a/book/exercise_notebooks/exercise_notebook_5_figures.ipynb
+++ b/book/exercise_notebooks/exercise_notebook_5_figures.ipynb
@@ -261,7 +261,7 @@
     "**Label hint:** unfortunately there is no function `plot.zlabel()`.\n",
     "Instead you have to use `ax.set_zlabel('...')`. You can use `ax.set_xlabel()` and `ax.set_ylabel()` too. Your script looks nicer if you handle all axes in the same way.\n",
     "   \n",
-    "**Note:** the z-label doesn't necessary show up anyway, perhaps it's hidden behind the plot. If you could rotate the plot it might show up. For now let's choose our battles and not worry about this.\n",
+    "**Note:** the z-label doesn't necessarily show up anyway, perhaps it's hidden behind the plot. If you could rotate the plot it might show up. For now let's choose our battles and not worry about this.\n",
     "</div></div>"
    ]
   },
diff --git a/book/exercise_notebooks/exercise_notebook_5_figures.zip b/book/exercise_notebooks/exercise_notebook_5_figures.zip
index df6fdd3..506f0eb 100644
Binary files a/book/exercise_notebooks/exercise_notebook_5_figures.zip and b/book/exercise_notebooks/exercise_notebook_5_figures.zip differ