diff --git a/Scripts/Editor/NodeEditorAction.cs b/Scripts/Editor/NodeEditorAction.cs
index b112732..9bcbdc3 100644
--- a/Scripts/Editor/NodeEditorAction.cs
+++ b/Scripts/Editor/NodeEditorAction.cs
@@ -478,6 +478,7 @@ namespace XNodeEditor {
                     }
                 }
             }
+			EditorUtility.SetDirty(graph);
             // Select the new nodes
             Selection.objects = newNodes;
         }