diff --git a/dagre/dagre.d.ts b/dagre/dagre.d.ts
index ce389f2d7e..75d7e389a7 100644
--- a/dagre/dagre.d.ts
+++ b/dagre/dagre.d.ts
@@ -10,20 +10,24 @@ declare module Dagre{
 
     interface Graph {
         new (): Graph;
-        edges(): string[];
-        edge(id: string): any;
+        edges(): Edge[];
+        edge(id: any): any;
         nodes(): string[];
-        node(id: string): any;
+        node(id: any): any;
         setDefaultEdgeLabel(callback: () => void): Graph;
         setEdge(sourceId: string, targetId: string): Graph;
         setGraph(options: { [key: string]: any }): Graph;
         setNode(id: string, node: { [key: string]: any }): Graph;
     }
 
+    interface Edge {
+        v: string;
+        w: string;
+    }
+
     interface GraphLib {
         Graph: Graph;
     }
 }
 
-declare var dagre: Dagre.DagreFactory;
-
+declare var dagre: Dagre.DagreFactory;
\ No newline at end of file