diff --git a/.changeset/flat-horses-smile.md b/.changeset/flat-horses-smile.md
new file mode 100644
index 00000000..7d080484
--- /dev/null
+++ b/.changeset/flat-horses-smile.md
@@ -0,0 +1,7 @@
+---
+'@xyflow/system': patch
+'@xyflow/react': patch
+'@xyflow/svelte': patch
+---
+
+Let NodeResizer props change during ongoing resize
diff --git a/examples/react/src/examples/NodeResizer/DefaultResizer.tsx b/examples/react/src/examples/NodeResizer/DefaultResizer.tsx
index a3532a8f..d5d314ba 100644
--- a/examples/react/src/examples/NodeResizer/DefaultResizer.tsx
+++ b/examples/react/src/examples/NodeResizer/DefaultResizer.tsx
@@ -1,7 +1,9 @@
 import { memo, FC } from 'react';
-import { Handle, Position, NodeProps, NodeResizer } from '@xyflow/react';
+import { Handle, Position, NodeProps, NodeResizer, useKeyPress } from '@xyflow/react';
 
 const DefaultResizerNode: FC<NodeProps> = ({ data, selected }) => {
+  const keepAspectRatio = useKeyPress('k');
+
   return (
     <>
       <NodeResizer
@@ -14,7 +16,7 @@ const DefaultResizerNode: FC<NodeProps> = ({ data, selected }) => {
         onResizeStart={data.onResizeStart ?? undefined}
         onResize={data.onResize ?? undefined}
         onResizeEnd={data.onResizeEnd ?? undefined}
-        keepAspectRatio={data.keepAspectRatio ?? undefined}
+        keepAspectRatio={keepAspectRatio || (data.keepAspectRatio ?? undefined)}
       />
       <Handle type="target" position={Position.Left} />
       <div>{data.label}</div>
diff --git a/examples/svelte/src/routes/examples/node-resizer/+page.svelte b/examples/svelte/src/routes/examples/node-resizer/+page.svelte
index c3311337..61f4ca22 100644
--- a/examples/svelte/src/routes/examples/node-resizer/+page.svelte
+++ b/examples/svelte/src/routes/examples/node-resizer/+page.svelte
@@ -9,6 +9,7 @@
 
 	import '@xyflow/svelte/dist/style.css';
 	import type { ResizeNode } from './types';
+	import { store } from './store.svelte';
 
 	const nodeTypes = {
 		defaultResizer: DefaultResizer,
@@ -139,6 +140,15 @@
 	let snapToGrid = $state(false);
 </script>
 
+<svelte:window
+	on:keydown={(e) => {
+		if (e.key === 'k') store.keepAspectRatio = true;
+	}}
+	on:keyup={(e) => {
+		if (e.key === 'k') store.keepAspectRatio = false;
+	}}
+/>
+
 <SvelteFlow
 	bind:nodes
 	bind:edges
diff --git a/examples/svelte/src/routes/examples/node-resizer/CustomResizer.svelte b/examples/svelte/src/routes/examples/node-resizer/CustomResizer.svelte
index 464274ec..15cf8b22 100644
--- a/examples/svelte/src/routes/examples/node-resizer/CustomResizer.svelte
+++ b/examples/svelte/src/routes/examples/node-resizer/CustomResizer.svelte
@@ -1,6 +1,7 @@
 <script lang="ts">
 	import { Handle, Position, type NodeProps, NodeResizeControl, type Node } from '@xyflow/svelte';
 	import type { ResizeNode } from './types';
+	import { store } from './store.svelte';
 
 	let { data }: NodeProps<ResizeNode> = $props();
 </script>
@@ -14,7 +15,7 @@
 	onResizeStart={data.onResizeStart ?? undefined}
 	onResize={data.onResize ?? undefined}
 	onResizeEnd={data.onResizeEnd ?? undefined}
-	keepAspectRatio={data.keepAspectRatio ?? undefined}
+	keepAspectRatio={store.keepAspectRatio || (data.keepAspectRatio ?? undefined)}
 	style="background: transparent; border: none;"
 >
 	<svg
diff --git a/examples/svelte/src/routes/examples/node-resizer/DefaultResizer.svelte b/examples/svelte/src/routes/examples/node-resizer/DefaultResizer.svelte
index 8912f965..b4c2c5f1 100644
--- a/examples/svelte/src/routes/examples/node-resizer/DefaultResizer.svelte
+++ b/examples/svelte/src/routes/examples/node-resizer/DefaultResizer.svelte
@@ -2,6 +2,8 @@
 	import { Handle, NodeResizer, Position, type NodeProps } from '@xyflow/svelte';
 	import type { ResizeNode } from './types';
 
+	import { store } from './store.svelte';
+
 	let { data, selected }: NodeProps<ResizeNode> = $props();
 </script>
 
@@ -15,7 +17,7 @@
 	onResizeStart={data.onResizeStart ?? undefined}
 	onResize={data.onResize ?? undefined}
 	onResizeEnd={data.onResizeEnd ?? undefined}
-	keepAspectRatio={data.keepAspectRatio ?? undefined}
+	keepAspectRatio={store.keepAspectRatio || (data.keepAspectRatio ?? undefined)}
 />
 <Handle type="target" position={Position.Left} />
 <div>{data.label}</div>
diff --git a/examples/svelte/src/routes/examples/node-resizer/HorizontalResizer.svelte b/examples/svelte/src/routes/examples/node-resizer/HorizontalResizer.svelte
index d9ec28ff..2727e4c7 100644
--- a/examples/svelte/src/routes/examples/node-resizer/HorizontalResizer.svelte
+++ b/examples/svelte/src/routes/examples/node-resizer/HorizontalResizer.svelte
@@ -1,6 +1,7 @@
 <script lang="ts">
 	import { Handle, NodeResizeControl, Position, type NodeProps } from '@xyflow/svelte';
 	import type { ResizeNode } from './types';
+	import { store } from './store.svelte';
 
 	let { data }: NodeProps<ResizeNode> = $props();
 </script>
@@ -14,7 +15,7 @@
 	onResizeStart={data.onResizeStart ?? undefined}
 	onResize={data.onResize ?? undefined}
 	onResizeEnd={data.onResizeEnd ?? undefined}
-	keepAspectRatio={data.keepAspectRatio ?? undefined}
+	keepAspectRatio={store.keepAspectRatio || (data.keepAspectRatio ?? undefined)}
 	color="red"
 	position={Position.Left}
 />
diff --git a/examples/svelte/src/routes/examples/node-resizer/VerticalResizer.svelte b/examples/svelte/src/routes/examples/node-resizer/VerticalResizer.svelte
index fedfff50..eec2578b 100644
--- a/examples/svelte/src/routes/examples/node-resizer/VerticalResizer.svelte
+++ b/examples/svelte/src/routes/examples/node-resizer/VerticalResizer.svelte
@@ -1,6 +1,7 @@
 <script lang="ts">
 	import { Handle, NodeResizeControl, Position, type NodeProps } from '@xyflow/svelte';
 	import type { ResizeNode } from './types';
+	import { store } from './store.svelte';
 
 	let { data }: NodeProps<ResizeNode> = $props();
 </script>
@@ -14,7 +15,7 @@
 	onResizeStart={data.onResizeStart ?? undefined}
 	onResize={data.onResize ?? undefined}
 	onResizeEnd={data.onResizeEnd ?? undefined}
-	keepAspectRatio={data.keepAspectRatio ?? undefined}
+	keepAspectRatio={store.keepAspectRatio || (data.keepAspectRatio ?? undefined)}
 	color="red"
 	position={Position.Top}
 />
diff --git a/examples/svelte/src/routes/examples/node-resizer/store.svelte.ts b/examples/svelte/src/routes/examples/node-resizer/store.svelte.ts
new file mode 100644
index 00000000..076582b2
--- /dev/null
+++ b/examples/svelte/src/routes/examples/node-resizer/store.svelte.ts
@@ -0,0 +1,14 @@
+function createStore() {
+	let keepAspectRatio = $state(false);
+
+	return {
+		get keepAspectRatio() {
+			return keepAspectRatio;
+		},
+		set keepAspectRatio(value: boolean) {
+			keepAspectRatio = value;
+		}
+	};
+}
+
+export const store = createStore();
diff --git a/packages/system/src/xyresizer/XYResizer.ts b/packages/system/src/xyresizer/XYResizer.ts
index 326a7007..713d14e3 100644
--- a/packages/system/src/xyresizer/XYResizer.ts
+++ b/packages/system/src/xyresizer/XYResizer.ts
@@ -104,6 +104,18 @@ function nodeToChildExtent(child: NodeBase, parent: NodeBase, nodeOrigin: NodeOr
 export function XYResizer({ domNode, nodeId, getStoreItems, onChange, onEnd }: XYResizerParams): XYResizerInstance {
   const selection = select(domNode);
 
+  let params = {
+    controlDirection: getControlDirection('bottom-right'),
+    boundaries: {
+      minWidth: 0,
+      minHeight: 0,
+      maxWidth: Number.MAX_VALUE,
+      maxHeight: Number.MAX_VALUE,
+    },
+    resizeDirection: undefined as ResizeControlDirection | undefined,
+    keepAspectRatio: false,
+  };
+
   function update({
     controlPosition,
     boundaries,
@@ -117,7 +129,12 @@ export function XYResizer({ domNode, nodeId, getStoreItems, onChange, onEnd }: X
     let prevValues = { ...initPrevValues };
     let startValues = { ...initStartValues };
 
-    const controlDirection = getControlDirection(controlPosition);
+    params = {
+      boundaries,
+      resizeDirection,
+      keepAspectRatio,
+      controlDirection: getControlDirection(controlPosition),
+    };
 
     let node: InternalNodeBase | undefined = undefined;
     let containerBounds: DOMRect | null = null;
@@ -212,16 +229,17 @@ export function XYResizer({ domNode, nodeId, getStoreItems, onChange, onEnd }: X
         if (!node) {
           return;
         }
+
         const { x: prevX, y: prevY, width: prevWidth, height: prevHeight } = prevValues;
         const change: XYResizerChange = {};
         const nodeOrigin = node.origin ?? storeNodeOrigin;
 
         const { width, height, x, y } = getDimensionsAfterResize(
           startValues,
-          controlDirection,
+          params.controlDirection,
           pointerPosition,
-          boundaries,
-          keepAspectRatio,
+          params.boundaries,
+          params.keepAspectRatio,
           nodeOrigin,
           parentExtent,
           childExtent
@@ -264,9 +282,13 @@ export function XYResizer({ domNode, nodeId, getStoreItems, onChange, onEnd }: X
 
         if (isWidthChange || isHeightChange) {
           change.width =
-            isWidthChange && (!resizeDirection || resizeDirection === 'horizontal') ? width : prevValues.width;
+            isWidthChange && (!params.resizeDirection || params.resizeDirection === 'horizontal')
+              ? width
+              : prevValues.width;
           change.height =
-            isHeightChange && (!resizeDirection || resizeDirection === 'vertical') ? height : prevValues.height;
+            isHeightChange && (!params.resizeDirection || params.resizeDirection === 'vertical')
+              ? height
+              : prevValues.height;
           prevValues.width = change.width;
           prevValues.height = change.height;
         }
@@ -291,8 +313,8 @@ export function XYResizer({ domNode, nodeId, getStoreItems, onChange, onEnd }: X
           prevWidth,
           height: prevValues.height,
           prevHeight,
-          affectsX: controlDirection.affectsX,
-          affectsY: controlDirection.affectsY,
+          affectsX: params.controlDirection.affectsX,
+          affectsY: params.controlDirection.affectsY,
         });
 
         const nextValues = { ...prevValues, direction };