diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..c019bf2
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,5 @@
+module github.com/mazznoer/colorgrad
+
+go 1.12
+
+require github.com/lucasb-eyer/go-colorful v1.0.3