diff --git a/.changeset/breezy-eels-trade.md b/.changeset/breezy-eels-trade.md
new file mode 100644
index 0000000..8cbd9e3
--- /dev/null
+++ b/.changeset/breezy-eels-trade.md
@@ -0,0 +1,5 @@
+---
+"@svelte-dev/auth-alipay": major
+---
+
+Bump to major version
diff --git a/packages/auth-alipay/src/lib/index.ts b/packages/auth-alipay/src/lib/index.ts
index 657ce61..fc8b349 100644
--- a/packages/auth-alipay/src/lib/index.ts
+++ b/packages/auth-alipay/src/lib/index.ts
@@ -79,7 +79,7 @@ export class AlipayStrategy<
     {
       appId,
       privateKey,
-      callbackURL,
+      callbackURL = '/auth/alipay/callback',
       signType = AlipayStrategyDefaultSignType,
       scope,
       userAgent,