diff --git a/docs/conf.py b/docs/conf.py
index 8c46230..375a37e 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -240,6 +240,8 @@ htmlhelp_basename = 'GLManual'
 
 # -- Options for LaTeX output ---------------------------------------------
 
+latex_engine = 'xelatex'
+
 latex_elements = {
      # The paper size ('letterpaper' or 'a4paper').
      #