diff --git a/.github/workflows/cache.yml b/.github/workflows/cache.yml
index 0d93e01db..2086d37c2 100644
--- a/.github/workflows/cache.yml
+++ b/.github/workflows/cache.yml
@@ -29,7 +29,8 @@ jobs:
             texlive-xetex             \
             latexmk                   \
             xindy                     \
-            dvipng
+            dvipng                    \
+            cm-super
       - name: Build HTML
         shell: bash -l {0}
         run: |
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8f4f6fe14..8c6c9c75a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,7 +25,9 @@ jobs:
             texlive-fonts-extra       \
             texlive-xetex             \
             latexmk                   \
-            xindy
+            xindy                     \
+            dvipng                    \
+            cm-super
       - name: Display Conda Environment Versions
         shell: bash -l {0}
         run: conda list
diff --git a/.github/workflows/execution.yml b/.github/workflows/execution.yml
index 6f4850eea..0ce6157c0 100644
--- a/.github/workflows/execution.yml
+++ b/.github/workflows/execution.yml
@@ -19,6 +19,19 @@ jobs:
         with:
           auto-update-conda: true
           python-version: ${{ matrix.python-version }}
+      - name: Install latex dependencies
+        run: |
+          sudo apt-get -qq update
+          sudo apt-get install -y     \
+            texlive-latex-recommended \
+            texlive-latex-extra       \
+            texlive-fonts-recommended \
+            texlive-fonts-extra       \
+            texlive-xetex             \
+            latexmk                   \
+            xindy                     \
+            dvipng                    \
+            cm-super      
       - name: Install Anaconda + Dependencies
         shell: bash -l {0}
         run: |
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index e95449f9e..d12bf3fe3 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -29,7 +29,9 @@ jobs:
             texlive-fonts-extra       \
             texlive-xetex             \
             latexmk                   \
-            xindy
+            xindy                     \
+            dvipng                    \
+            cm-super
       - name: Display Conda Environment Versions
         shell: bash -l {0}
         run: conda list
diff --git a/lectures/five_preferences.md b/lectures/five_preferences.md
index cd8f13b74..3232014f2 100644
--- a/lectures/five_preferences.md
+++ b/lectures/five_preferences.md
@@ -76,7 +76,7 @@ from numba import njit
 %matplotlib inline
 %config InlineBackend.figure_format='retina'
 
-rc('text', usetex=True)
+plt.rc('text', usetex=True)
 
 label_size = 20
 label_tick_size = 18