diff --git a/.github/gen-page-preview/main.spec.ts b/.github/gen-page-preview/main.spec.ts
index 6d25a131..bfc3bd07 100644
--- a/.github/gen-page-preview/main.spec.ts
+++ b/.github/gen-page-preview/main.spec.ts
@@ -36,7 +36,7 @@ async function scrollFullPage(page: Page) {
 
 test("page screenshot", async ({ page }) => {
   const files = execSync(
-    "git diff --diff-filter=ACMR --name-only HEAD^1 HEAD",
+    "git diff --diff-filter=ACMR --name-only master HEAD",
     {
       cwd: process.env.GITHUB_WORKSPACE + "/content/",
     }