diff --git a/.github/workflows/appengine-deploy.yaml b/.github/workflows/appengine-deploy.yaml
index c51645a..108a9ab 100644
--- a/.github/workflows/appengine-deploy.yaml
+++ b/.github/workflows/appengine-deploy.yaml
@@ -14,23 +14,25 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v1
 
-      # Setup gcloud CLI
-      - uses: GoogleCloudPlatform/github-actions/setup-gcloud@master
+      - name: GCloud auth
+        id: 'auth'
+        uses: 'google-github-actions/auth@v0'
         with:
-          version: '275.0.0'
-          service_account_email: ${{ secrets.GCP_SA_EMAIL }}
-          service_account_key: ${{ secrets.GCP_SA_KEY }}
+          credentials_json: '${{ secrets.GCP_SA_KEY }}'
+
+      - name: GCloud setup
+        uses: google-github-actions/setup-gcloud@v0
 
       - name: Install yq
         run: sudo snap install yq
 
       - name: Set COMMIT 
         run: |
-          yq write --inplace ./app.yaml env_variables.COMMIT ${GITHUB_SHA:0:7}
+          SHORT_SHA=${GITHUB_SHA:0:7} yq '.env_variables.COMMIT = strenv(SHORT_SHA)' --inplace ./app.yaml 
 
       - name: Set LASTMODIFIED
         run: |
-          yq write --inplace ./app.yaml env_variables.LASTMOD "$(date -u +%Y-%m-%dT%H:%M:%SZ)"
+          LASTMOD="$(date -u +%Y-%m-%dT%H:%M:%SZ)" yq '.env_variables.LASTMOD = strenv(LASTMOD)' --inplace ./app.yaml 
 
       - name: Deploy to AppEngine
         run: |
diff --git a/app.yaml b/app.yaml
index 39f2277..1ad73ed 100644
--- a/app.yaml
+++ b/app.yaml
@@ -7,5 +7,5 @@
     "COMMIT": "dev",
     "LASTMOD": "dev",
   },
-  "runtime": "go112"
+  "runtime": "go121"
 }
diff --git a/go.mod b/go.mod
index 1e6983b..129d28b 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,3 @@
 module ae-geo
 
-go 1.12
+go 1.21