diff --git a/_quarto.yml b/_quarto.yml
index 632b08c..c947903 100644
--- a/_quarto.yml
+++ b/_quarto.yml
@@ -24,6 +24,7 @@ format:
     theme: flatly
   pdf:
     documentclass: scrreprt
+    pdf-engine: xelatex
 
 editor: visual
 
diff --git a/docs/Computational-Social-Science-Cookbook-with-R.pdf b/docs/Computational-Social-Science-Cookbook-with-R.pdf
deleted file mode 100644
index f992ef1..0000000
Binary files a/docs/Computational-Social-Science-Cookbook-with-R.pdf and /dev/null differ