diff --git a/packages/react/src/types/edges.ts b/packages/react/src/types/edges.ts
index 76690161..b85612f9 100644
--- a/packages/react/src/types/edges.ts
+++ b/packages/react/src/types/edges.ts
@@ -60,7 +60,9 @@ type StepEdge<EdgeData extends Record<string, unknown> = Record<string, unknown>
   pathOptions?: StepPathOptions;
 };
 
-export type BuiltInEdge = SmoothStepEdge | BezierEdge | StepEdge;
+type StraightEdge<EdgeData extends Record<string, unknown> = Record<string, unknown>> = Edge<EdgeData, 'straight'>;
+
+export type BuiltInEdge = SmoothStepEdge | BezierEdge | StepEdge | StraightEdge;
 
 export type EdgeMouseHandler<EdgeType extends Edge = Edge> = (event: ReactMouseEvent, edge: EdgeType) => void;
 
diff --git a/packages/svelte/src/lib/types/edges.ts b/packages/svelte/src/lib/types/edges.ts
index b9700292..de1def91 100644
--- a/packages/svelte/src/lib/types/edges.ts
+++ b/packages/svelte/src/lib/types/edges.ts
@@ -44,7 +44,12 @@ type StepEdge<EdgeData extends Record<string, unknown> = Record<string, unknown>
   pathOptions?: StepPathOptions;
 };
 
-export type BuiltInEdge = SmoothStepEdge | BezierEdge | StepEdge;
+type StraightEdge<EdgeData extends Record<string, unknown> = Record<string, unknown>> = Edge<
+  EdgeData,
+  'straight'
+>;
+
+export type BuiltInEdge = SmoothStepEdge | BezierEdge | StepEdge | StraightEdge;
 
 /**
  * Custom edge component props.