diff --git a/.biber.conf b/.biber.conf
new file mode 100644
index 0000000..0680dba
--- /dev/null
+++ b/.biber.conf
@@ -0,0 +1,4 @@
+<config>
+  <output_directory>out</output_directory>
+  <input_directory>out</input_directory>
+</config>
diff --git a/.latexmkrc b/.latexmkrc
index 80954ed..958bd1d 100644
--- a/.latexmkrc
+++ b/.latexmkrc
@@ -1,2 +1,4 @@
 $out_dir = "out";
 $pdf_mode = 4;            # lualatex
+$bibtex_use = 2;          # biber
+$clean_ext .= ' %R.run.xml %R.bbl %R.bcf %R-blx.bib';