diff --git a/cloudbuild/presubmit.yaml b/cloudbuild/presubmit.yaml
index e525216e..25ba3e04 100644
--- a/cloudbuild/presubmit.yaml
+++ b/cloudbuild/presubmit.yaml
@@ -19,7 +19,7 @@ steps:
       - USERNAME=user
       - SSH_ARGS=--internal-ip --ssh-key-expire-after=1d
       - INSTANCE_NAME=kne-presubmit-$BUILD_ID
-      - INSTANCE_ARGS=--network cloudbuild-workers --image-project gep-kne --image-family kne --machine-type e2-standard-32 --scopes=cloud-platform
+      - INSTANCE_ARGS=--network cloudbuild-workers --image-project gep-kne --image-family kne --machine-type e2-standard-32 --scopes=cloud-platform --boot-disk-size=100GB
       - ZONE=us-central1-a
       - REMOTE_WORKSPACE=/tmp/workspace
       - COMMAND=sh -c "BUILD=$BUILD_ID /tmp/workspace/cloudbuild/presubmit.sh"