diff --git a/.github/workflows/build_tests.yaml b/.github/workflows/build_tests.yaml
index ac5ec42e..038787fe 100644
--- a/.github/workflows/build_tests.yaml
+++ b/.github/workflows/build_tests.yaml
@@ -138,7 +138,7 @@ jobs:
     - name: Check xpk installation
       run: xpk --help
     - name: Create a private Pathways-enabled XPK Cluster with 2x $TPU_TYPE nodepools. Larger num-nodes to avoid master resizing.
-      run: python xpk.py cluster create-pathways --cluster $TPU_CLUSTER_NAME --private --tpu-type=$TPU_TYPE  --num-slices=2 --zone=us-central2-b --default-pool-cpu-machine-type=n1-standard-16 --default-pool-cpu-num-nodes=16 --reservation='${{ secrets.GCP_TPU_V4_RESERVATION }}' --custom-cluster-arguments="${CLUSTER_ARGUMENTS}"
+      run: python xpk.py cluster create-pathways --cluster $TPU_CLUSTER_NAME --private --tpu-type=$TPU_TYPE  --num-slices=2 --zone=us-central2-b --default-pool-cpu-machine-type=n1-standard-16 --default-pool-cpu-num-nodes=16 --on-demand --custom-cluster-arguments="${CLUSTER_ARGUMENTS}"
     - name: Verify the created cluster is private
       run: gcloud container clusters describe $TPU_CLUSTER_NAME --region=us-central2 --format="value(privateClusterConfig.enablePrivateNodes)" | grep 'True' || (echo 'The created cluster is not private.' && exit 1)
     - name: Authenticate Docker