diff --git a/.github/workflows/pull_request.yaml b/.github/workflows/pull_request.yaml
index 4d4acdb8..22b1a3c0 100644
--- a/.github/workflows/pull_request.yaml
+++ b/.github/workflows/pull_request.yaml
@@ -32,7 +32,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    - uses: google-github-actions/setup-gcloud@master
+    - uses: google-github-actions/setup-gcloud@v0
       with:
         service_account_email: ${{ secrets.GCP_SA_EMAIL }}
         service_account_key: ${{ secrets.GCP_SA_KEY }}
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index e652716a..9e75f246 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -32,7 +32,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    - uses: google-github-actions/setup-gcloud@master
+    - uses: google-github-actions/setup-gcloud@v0
       with:
         service_account_email: ${{ secrets.GCP_SA_EMAIL }}
         service_account_key: ${{ secrets.GCP_SA_KEY }}