diff --git a/.changeset/fuzzy-urls-rest.md b/.changeset/fuzzy-urls-rest.md
new file mode 100644
index 0000000000..c49215278e
--- /dev/null
+++ b/.changeset/fuzzy-urls-rest.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: avoid tracking SvelteURLSearchParams during URL updates
diff --git a/packages/svelte/src/reactivity/url-search-params.js b/packages/svelte/src/reactivity/url-search-params.js
index d745bb6b08..0b87820bfc 100644
--- a/packages/svelte/src/reactivity/url-search-params.js
+++ b/packages/svelte/src/reactivity/url-search-params.js
@@ -42,7 +42,7 @@ export class SvelteURLSearchParams extends URLSearchParams {
 		if (!this.#url || this.#updating) return;
 		this.#updating = true;
 
-		const search = this.toString();
+		const search = super.toString();
 		this.#url.search = search && `?${search}`;
 
 		this.#updating = false;
diff --git a/packages/svelte/src/reactivity/url.test.ts b/packages/svelte/src/reactivity/url.test.ts
index 72518d730a..4f597526be 100644
--- a/packages/svelte/src/reactivity/url.test.ts
+++ b/packages/svelte/src/reactivity/url.test.ts
@@ -115,6 +115,24 @@ test('url.searchParams', () => {
 	cleanup();
 });
 
+test('url.searchParams writes do not create a reactive dependency', () => {
+	const url = new SvelteURL('https://svelte.dev');
+	let runs = 0;
+
+	const cleanup = effect_root(() => {
+		render_effect(() => {
+			runs += 1;
+			url.searchParams.set('foo', 'bar');
+		});
+	});
+
+	flushSync();
+
+	assert.equal(runs, 1);
+
+	cleanup();
+});
+
 test('url.searchParams.set updates url when duplicate values collapse to the same joined string', () => {
 	const url = new SvelteURL('https://svelte.dev?a=ab&a=c');
 	const log: any = [];