diff --git a/packages/core/src/types/edges.ts b/packages/core/src/types/edges.ts
index 143c7fa6..01f73a86 100644
--- a/packages/core/src/types/edges.ts
+++ b/packages/core/src/types/edges.ts
@@ -36,8 +36,11 @@ type DefaultEdge<T = any> = {
   ariaLabel?: string;
   interactionWidth?: number;
   focusable?: boolean;
+  updatable?: EdgeUpdatable;
 } & EdgeLabelOptions;
 
+export type EdgeUpdatable = boolean | 'target' | 'source';
+
 export type SmoothStepPathOptions = {
   offset?: number;
   borderRadius?: number;