diff --git a/circular-dependency-checker/main.go b/circular-dependency-checker/main.go
index 0b02ff0..3c79ed2 100644
--- a/circular-dependency-checker/main.go
+++ b/circular-dependency-checker/main.go
@@ -8,6 +8,7 @@ import (
 	"strings"
 )
 
+// From: https://docs.godotengine.org/en/stable/classes/index.html
 var ignoredTypes = []string{
 	"@GDScript",
 	"@GlobalScope",