diff --git a/src/input/header.dot b/src/input/header.dot
index e3f1a79..294d5b4 100644
--- a/src/input/header.dot
+++ b/src/input/header.dot
@@ -1,3 +1,7 @@
+// Graph generated by WireViz
+// https://github.com/formatc1702/WireViz
+// Daniel Rojas - 2020
+
 digraph G {
     graph [rankdir = LR, ranksep=2, fontname = "arial"];
     edge [arrowhead=none, fontname = "arial"];