diff --git a/paper/src/preamble.tex b/paper/src/preamble.tex
index 0acd7c7..79b2857 100644
--- a/paper/src/preamble.tex
+++ b/paper/src/preamble.tex
@@ -20,7 +20,10 @@
     commentstyle=\color{green!60!black},
     stringstyle=\color{red},
     showstringspaces=false,
-    captionpos=b
+    captionpos=b,
+    inputencoding=utf8,
+    extendedchars=true,
+    literate={·}{{\textperiodcentered}}1 {−}{{\textminus}}1 {—}{{---}}1 {–}{{--}}1
 }
 
 % Use biblatex instead of natbib (acmart default)