diff --git a/Makefile b/Makefile
index 77f6386..1c090fe 100644
--- a/Makefile
+++ b/Makefile
@@ -14,7 +14,7 @@ deploy:
 
 install:
 	opam update && opam install bibtex2html
-	gem update --system && gem install sass
+	port install dart-sass
 
 clean:
 	cabal v2-clean