diff --git a/.github/workflows/sdk_validation.yaml b/.github/workflows/sdk_validation.yaml
index 1135038..9abc006 100644
--- a/.github/workflows/sdk_validation.yaml
+++ b/.github/workflows/sdk_validation.yaml
@@ -19,6 +19,14 @@ jobs:
     concurrency:
       group: php-sdk-check
     steps:
+      - name: Check if secret exists
+          run: |
+            if [ -z "${{ secrets.SHIPPO_TOKEN }}" ]; then
+              echo "SHIPPO_TOKEN does not exist"
+              exit 1
+            else
+              echo "SHIPPO_TOKEN exists"
+            fi
       - name: Check out repository
         uses: actions/checkout@v4