diff --git a/cluster/gce/util.sh b/cluster/gce/util.sh
index 5a90a7d0c34..11bea167715 100755
--- a/cluster/gce/util.sh
+++ b/cluster/gce/util.sh
@@ -247,8 +247,8 @@ function upload-server-tars() {
 #   MINION_NAMES
 function detect-minion-names {
   detect-project
-  MINION_NAMES=($(gcloud preview --project "${PROJECT}" instance-groups \
-    --zone "${ZONE}" instances --group "${NODE_INSTANCE_PREFIX}-group" list \
+  MINION_NAMES=($(gcloud compute instance-groups managed list-instances \
+    "${NODE_INSTANCE_PREFIX}-group" --zone "${ZONE}" --project "${PROJECT}" \
     | cut -d'/' -f11))
   echo "MINION_NAMES=${MINION_NAMES[*]}" >&2
 }
@@ -764,7 +764,7 @@ function kube-down {
 
   # The gcloud APIs don't return machine parseable error codes/retry information. Therefore the best we can
   # do is parse the output and special case particular responses we are interested in.
-  if gcloud compute instance-groups managed describe --project "${PROJECT}" --zone "${ZONE}" "${NODE_INSTANCE_PREFIX}-group" &>/dev/null; then
+  if gcloud compute instance-groups managed describe "${NODE_INSTANCE_PREFIX}-group" --project "${PROJECT}" --zone "${ZONE}" &>/dev/null; then
     deleteCmdOutput=$(gcloud compute instance-groups managed delete --zone "${ZONE}" \
       --project "${PROJECT}" \
       --quiet \
diff --git a/cluster/gke/util.sh b/cluster/gke/util.sh
index 6d4ea3a477d..ea15e7a279f 100755
--- a/cluster/gke/util.sh
+++ b/cluster/gke/util.sh
@@ -243,9 +243,10 @@ function detect-minions() {
 function detect-minion-names {
   detect-project
   detect-node-instance-group
-  MINION_NAMES=($(gcloud preview --project "${PROJECT}" instance-groups \
-    --zone "${ZONE}" instances --group "${NODE_INSTANCE_GROUP}" list \
-    | cut -d'/' -f11))
+  MINION_NAMES=($(gcloud compute instance-groups managed list-instances \
+    "${NODE_INSTANCE_GROUP}" --zone "${ZONE}" --project "${PROJECT}" \
+    --format=yaml | grep instance: | cut -d ' ' -f 2))
+
   echo "MINION_NAMES=${MINION_NAMES[*]}"
 }