diff --git a/src/graphs/Graph.java b/src/graphs/Graph.java
index df8d6f7..b375a57 100644
--- a/src/graphs/Graph.java
+++ b/src/graphs/Graph.java
@@ -7,6 +7,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
+// TODO: Implement Chinese postman solving.
 
 public class Graph {
   private Map<Vector, Node> nodes;