diff --git a/.changeset/tidy-hounds-divide.md b/.changeset/tidy-hounds-divide.md
new file mode 100644
index 00000000..7de11f92
--- /dev/null
+++ b/.changeset/tidy-hounds-divide.md
@@ -0,0 +1,5 @@
+---
+'@xyflow/react': patch
+---
+
+Add missing `FinalConnectionState` parameter to `onReconnectEnd` prop types
diff --git a/packages/react/src/types/component-props.ts b/packages/react/src/types/component-props.ts
index fc8b94a6..483b727a 100644
--- a/packages/react/src/types/component-props.ts
+++ b/packages/react/src/types/component-props.ts
@@ -22,6 +22,7 @@ import type {
   SnapGrid,
   OnReconnect,
   AriaLabelConfig,
+  FinalConnectionState,
 } from '@xyflow/system';
 
 import type {
@@ -138,7 +139,7 @@ export interface ReactFlowProps<NodeType extends Node = Node, EdgeType extends E
    * This event fires when the user releases the source or target of an editable edge. It is called
    * even if an edge update does not occur.
    */
-  onReconnectEnd?: (event: MouseEvent | TouchEvent, edge: EdgeType, handleType: HandleType) => void;
+  onReconnectEnd?: (event: MouseEvent | TouchEvent, edge: EdgeType, handleType: HandleType, connectionState: FinalConnectionState) => void;
   /**
    * Use this event handler to add interactivity to a controlled flow.
    * It is called on node drag, select, and move.