diff --git a/.changeset/proud-humans-burn.md b/.changeset/proud-humans-burn.md
new file mode 100644
index 000000000..5f5f008fc
--- /dev/null
+++ b/.changeset/proud-humans-burn.md
@@ -0,0 +1,5 @@
+---
+'@tanstack/svelte-virtual': patch
+---
+
+fix(svelte-virtual): force store update when setOptions is called
diff --git a/packages/svelte-virtual/src/index.ts b/packages/svelte-virtual/src/index.ts
index f16aa03ce..1607d8c2c 100644
--- a/packages/svelte-virtual/src/index.ts
+++ b/packages/svelte-virtual/src/index.ts
@@ -53,6 +53,11 @@ function createVirtualizerBase<
       },
     })
     virtualizer._willUpdate()
+    // Force store update in case the range didn't change (e.g. count increased
+    // but scroll position stayed the same). Without this, the store only
+    // updates when onChange fires (on range change), so changes like a new
+    // count that don't shift the visible range would not trigger a re-render.
+    virtualizerWritable.set(virtualizer)
   }
 
   virtualizerWritable = writable(virtualizer, () => {