diff --git a/.github/workflows/reg.yaml b/.github/workflows/reg.yaml
index f0c283ab..7c9267cd 100644
--- a/.github/workflows/reg.yaml
+++ b/.github/workflows/reg.yaml
@@ -46,7 +46,7 @@ jobs:
       # https://cloud.google.com/blog/ja/products/identity-security/enabling-keyless-authentication-from-github-actions
       - id: "auth"
         name: "Authenticate to Google Cloud"
-        uses: "google-github-actions/auth@v1.1.1"
+        uses: "google-github-actions/auth@v2.0.1"
         with:
           credentials_json: "${{ secrets.GOOGLE_APPLICATION_CREDENTIALS }}"