lmodern-Zeichensätze verwenden

dfi.tex

@@ -3,6 +3,7 @@
 \usepackage[colorlinks,allcolors=blue]{hyperref}
 \usepackage[german]{babel}  % Yes, really "german" and not "ngerman".
 \usepackage[utf8]{luainputenc}  % Without this, umlauts are broken. Weird.
+\usepackage{lmodern}
 \usepackage{microtype}
 \usepackage{parskip}
 \usepackage{color}