diff --git a/.github/workflows/azure-preview-env-deploy.yml b/.github/workflows/azure-preview-env-deploy.yml
index 6b8b322b36..948f282b3f 100644
--- a/.github/workflows/azure-preview-env-deploy.yml
+++ b/.github/workflows/azure-preview-env-deploy.yml
@@ -192,6 +192,8 @@ jobs:
           cache-to: ''
           build-args: |
             BUILD_SHA=${{ env.COMMIT_REF }}
+            HYDRO_SECRET=
+            HYDRO_ENDPOINT=
 
       # Succeed despite any non-zero exit code (e.g. if there is no deployment to cancel)
       - name: 'Cancel any existing deployments for this PR'