diff --git a/packages/svelte/src/lib/container/SvelteFlow/SvelteFlow.svelte b/packages/svelte/src/lib/container/SvelteFlow/SvelteFlow.svelte
index d9eb867d..36209b17 100644
--- a/packages/svelte/src/lib/container/SvelteFlow/SvelteFlow.svelte
+++ b/packages/svelte/src/lib/container/SvelteFlow/SvelteFlow.svelte
@@ -106,6 +106,14 @@
     };
   });
 
+  // Update width & height on resize
+  $: {
+    if (clientWidth !== undefined && clientHeight !== undefined) {
+      store.width.set(clientWidth);
+      store.height.set(clientHeight);
+    }
+  }
+
   // this updates the store for simple changes
   // where the prop names equals the store name
   $: {