diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..c3fd886
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,8 @@
+all: aoc
+
+aoc: $(wildcard *.m)
+	nix shell nixpkgs#mercury -c mmc --make aoc
+
+clean:
+	rm -rf Mercury
+	rm -f *.mh *.err aoc