diff --git a/.github/workflows/pdf.yml b/.github/workflows/pdf.yml
index bc52adc..d549634 100644
--- a/.github/workflows/pdf.yml
+++ b/.github/workflows/pdf.yml
@@ -19,6 +19,8 @@ jobs:
       run: |
           python3 --version
           sphinx-build --version
+          DEBIAN_FRONTEND=noninteractive apt-get update  -y
+          DEBIAN_FRONTEND=noninteractive apt-get install texlive-fonts-recommended -y
     - name: Lint .rst files
       run: |
         if find . -name '*.rst' | xargs grep -P '\t'; then echo 'Tabs are bad, please use four spaces in .rst files.'; false; fi
diff --git a/source/conf.py b/source/conf.py
index fe2331b..89e69c4 100644
--- a/source/conf.py
+++ b/source/conf.py
@@ -136,6 +136,8 @@ def get_git_revision_short_hash():
 
 \usepackage{titling}
 \usepackage{fancyhdr}
+\usepackage{times}
+\usepackage{courier}
 \makeatletter
 \fancypagestyle{normal}{
     \fancyhf{}
@@ -249,7 +251,7 @@ def get_git_revision_short_hash():
 
     # The font size ('10pt', '11pt' or '12pt').
     #
-    'pointsize': '12pt',
+    'pointsize': '11pt',
 
     # Other document class options - ensure uniform header/footer
     'classoptions': ',oneside,openany',