diff --git a/.github/workflows/sync-codesandbox.yml b/.github/workflows/sync-codesandbox.yml
index 5433097..3d8abb0 100644
--- a/.github/workflows/sync-codesandbox.yml
+++ b/.github/workflows/sync-codesandbox.yml
@@ -7,4 +7,4 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: kou029w/sync-codesandbox@master
-        with: { url: https://1uukr.sse.codesandbox.io/ }
+        with: { url: "https://1uukr.sse.codesandbox.io/" }