diff --git a/cluster/gce/config-default.sh b/cluster/gce/config-default.sh
index 1bcf7b05c1..12f6f8fcd7 100755
--- a/cluster/gce/config-default.sh
+++ b/cluster/gce/config-default.sh
@@ -70,7 +70,7 @@ fi
 CVM_VERSION=${CVM_VERSION:-container-vm-v20170214}
 # NOTE: Update the kernel commit SHA in cluster/addons/nvidia-gpus/cos-installer-daemonset.yaml
 # while updating the COS version here.
-GCI_VERSION=${KUBE_GCI_VERSION:-gci-stable-56-9000-84-2}
+GCI_VERSION=${KUBE_GCI_VERSION:-cos-beta-59-9460-20-0}
 MASTER_IMAGE=${KUBE_GCE_MASTER_IMAGE:-}
 MASTER_IMAGE_PROJECT=${KUBE_GCE_MASTER_PROJECT:-google-containers}
 NODE_IMAGE=${KUBE_GCE_NODE_IMAGE:-${CVM_VERSION}}
diff --git a/cluster/gce/config-test.sh b/cluster/gce/config-test.sh
index 2ba8163799..bcc3c10295 100755
--- a/cluster/gce/config-test.sh
+++ b/cluster/gce/config-test.sh
@@ -67,7 +67,7 @@ fi
 # variable. Also please update corresponding image for node e2e at:
 # https://github.com/kubernetes/kubernetes/blob/master/test/e2e_node/jenkins/image-config.yaml
 CVM_VERSION=${CVM_VERSION:-container-vm-v20170214}
-GCI_VERSION=${KUBE_GCI_VERSION:-gci-stable-56-9000-84-2}
+GCI_VERSION=${KUBE_GCI_VERSION:-cos-beta-59-9460-20-0}
 MASTER_IMAGE=${KUBE_GCE_MASTER_IMAGE:-}
 MASTER_IMAGE_PROJECT=${KUBE_GCE_MASTER_PROJECT:-google-containers}
 NODE_IMAGE=${KUBE_GCE_NODE_IMAGE:-${CVM_VERSION}}
diff --git a/cluster/gce/util.sh b/cluster/gce/util.sh
index a6d497b730..173c866d21 100755
--- a/cluster/gce/util.sh
+++ b/cluster/gce/util.sh
@@ -38,27 +38,36 @@ else
 fi
 
 if [[ "${MASTER_OS_DISTRIBUTION}" == "gci" ]]; then
-  # If the master image is not set, we use the latest GCI image.
-  # Otherwise, we respect whatever is set by the user.
-  MASTER_IMAGE=${KUBE_GCE_MASTER_IMAGE:-${GCI_VERSION}}
-  MASTER_IMAGE_PROJECT=${KUBE_GCE_MASTER_PROJECT:-google-containers}
+    DEFAULT_GCI_PROJECT=google-containers
+    if [[ "${GCI_VERSION}" == "cos"* ]]; then
+        DEFAULT_GCI_PROJECT=cos-cloud
+    fi
+    MASTER_IMAGE_PROJECT=${KUBE_GCE_MASTER_PROJECT:-${DEFAULT_GCI_PROJECT}}
+    # If the master image is not set, we use the latest GCI image.
+    # Otherwise, we respect whatever is set by the user.
+    MASTER_IMAGE=${KUBE_GCE_MASTER_IMAGE:-${GCI_VERSION}}
 elif [[ "${MASTER_OS_DISTRIBUTION}" == "debian" ]]; then
-  MASTER_IMAGE=${KUBE_GCE_MASTER_IMAGE:-${CVM_VERSION}}
-  MASTER_IMAGE_PROJECT=${KUBE_GCE_MASTER_PROJECT:-google-containers}
+    MASTER_IMAGE=${KUBE_GCE_MASTER_IMAGE:-${CVM_VERSION}}
+    MASTER_IMAGE_PROJECT=${KUBE_GCE_MASTER_PROJECT:-google-containers}
 fi
 
 # Sets node image based on the specified os distro. Currently this function only
 # supports gci and debian.
 function set-node-image() {
-  if [[ "${NODE_OS_DISTRIBUTION}" == "gci" ]]; then
-    # If the node image is not set, we use the latest GCI image.
-    # Otherwise, we respect whatever is set by the user.
-    NODE_IMAGE=${KUBE_GCE_NODE_IMAGE:-${GCI_VERSION}}
-    NODE_IMAGE_PROJECT=${KUBE_GCE_NODE_PROJECT:-google-containers}
-  elif [[ "${NODE_OS_DISTRIBUTION}" == "debian" ]]; then
-    NODE_IMAGE=${KUBE_GCE_NODE_IMAGE:-${CVM_VERSION}}
-    NODE_IMAGE_PROJECT=${KUBE_GCE_NODE_PROJECT:-google-containers}
-  fi
+    if [[ "${NODE_OS_DISTRIBUTION}" == "gci" ]]; then
+        DEFAULT_GCI_PROJECT=google-containers
+        if [[ "${GCI_VERSION}" == "cos"* ]]; then
+            DEFAULT_GCI_PROJECT=cos-cloud
+        fi
+
+        # If the node image is not set, we use the latest GCI image.
+        # Otherwise, we respect whatever is set by the user.
+        NODE_IMAGE=${KUBE_GCE_NODE_IMAGE:-${GCI_VERSION}}
+        NODE_IMAGE_PROJECT=${KUBE_GCE_NODE_PROJECT:-${DEFAULT_GCI_PROJECT}}
+    elif [[ "${NODE_OS_DISTRIBUTION}" == "debian" ]]; then
+        NODE_IMAGE=${KUBE_GCE_NODE_IMAGE:-${CVM_VERSION}}
+        NODE_IMAGE_PROJECT=${KUBE_GCE_NODE_PROJECT:-google-containers}
+    fi
 }
 
 set-node-image
diff --git a/cluster/kubemark/gce/config-default.sh b/cluster/kubemark/gce/config-default.sh
index 8aee025932..1fc342e918 100644
--- a/cluster/kubemark/gce/config-default.sh
+++ b/cluster/kubemark/gce/config-default.sh
@@ -36,7 +36,7 @@ PREEMPTIBLE_NODE=${PREEMPTIBLE_NODE:-false}
 
 MASTER_OS_DISTRIBUTION=${KUBE_MASTER_OS_DISTRIBUTION:-gci}
 NODE_OS_DISTRIBUTION=${KUBE_NODE_OS_DISTRIBUTION:-debian}
-MASTER_IMAGE=${KUBE_GCE_MASTER_IMAGE:-gci-stable-56-9000-84-2}
+MASTER_IMAGE=${KUBE_GCE_MASTER_IMAGE:-cos-beta-59-9460-20-0}
 MASTER_IMAGE_PROJECT=${KUBE_GCE_MASTER_PROJECT:-google-containers}
 
 NETWORK=${KUBE_GCE_NETWORK:-default}
diff --git a/test/e2e_node/jenkins/benchmark/benchmark-config.yaml b/test/e2e_node/jenkins/benchmark/benchmark-config.yaml
index 883f4247e3..95d1ee2f28 100644
--- a/test/e2e_node/jenkins/benchmark/benchmark-config.yaml
+++ b/test/e2e_node/jenkins/benchmark/benchmark-config.yaml
@@ -49,21 +49,21 @@ images:
     tests:
       - 'resource tracking for 105 pods per node \[Benchmark\]'
   gci-resource1:
-    image: gci-stable-56-9000-84-2
+    image: cos-beta-59-9460-20-0
     project: google-containers
     machine: n1-standard-1
     metadata: "user-data<test/e2e_node/jenkins/gci-init.yaml,gci-update-strategy=update_disabled"
     tests:
       - 'resource tracking for 0 pods per node \[Benchmark\]'
   gci-resource2:
-    image: gci-stable-56-9000-84-2
+    image: cos-beta-59-9460-20-0
     project: google-containers
     machine: n1-standard-1
     metadata: "user-data<test/e2e_node/jenkins/gci-init.yaml,gci-update-strategy=update_disabled"
     tests:
       - 'resource tracking for 35 pods per node \[Benchmark\]'
   gci-resource3:
-    image: gci-stable-56-9000-84-2
+    image: cos-beta-59-9460-20-0
     project: google-containers
     machine: n1-standard-1
     metadata: "user-data<test/e2e_node/jenkins/gci-init.yaml,gci-update-strategy=update_disabled"
diff --git a/test/e2e_node/jenkins/image-config-serial.yaml b/test/e2e_node/jenkins/image-config-serial.yaml
index 71ccbcfd82..92aaa6e2d1 100644
--- a/test/e2e_node/jenkins/image-config-serial.yaml
+++ b/test/e2e_node/jenkins/image-config-serial.yaml
@@ -23,8 +23,8 @@ images:
     image: e2e-node-containervm-v20161208-image # docker 1.11.2
     project: kubernetes-node-e2e-images
   gci:
-    image_regex: gci-stable-56-9000-84-2 # docker 1.11.2
-    project: google-containers
+    image_regex: cos-beta-59-9460-20-0 # docker 1.11.2
+    project: cos-cloud
     metadata: "user-data<test/e2e_node/jenkins/gci-init-gpu.yaml,gci-update-strategy=update_disabled"
     resources:
       accelerators:
diff --git a/test/e2e_node/jenkins/image-config.yaml b/test/e2e_node/jenkins/image-config.yaml
index f7d6a14042..02fc27b3ab 100644
--- a/test/e2e_node/jenkins/image-config.yaml
+++ b/test/e2e_node/jenkins/image-config.yaml
@@ -16,6 +16,6 @@ images:
     image: e2e-node-containervm-v20161208-image # docker 1.11.2
     project: kubernetes-node-e2e-images
   gci:
-    image_regex: gci-stable-56-9000-84-2 # docker 1.11.2
+    image_regex: cos-beta-59-9460-20-0 # docker 1.11.2
     project: google-containers
     metadata: "user-data<test/e2e_node/jenkins/gci-init.yaml,gci-update-strategy=update_disabled"
diff --git a/test/kubemark/gce/util.sh b/test/kubemark/gce/util.sh
index 991348e39f..d37ee974a3 100644
--- a/test/kubemark/gce/util.sh
+++ b/test/kubemark/gce/util.sh
@@ -66,7 +66,14 @@ function create-master-instance-with-resources {
   
   MASTER_IP=$(gcloud compute addresses describe "${MASTER_NAME}-ip" \
     --project "${PROJECT}" --region "${REGION}" -q --format='value(address)')
-  
+
+  # Override the master image project to cos-cloud for COS images staring with `cos` string prefix.
+  DEFAULT_GCI_PROJECT=google-containers
+  if [[ "${GCI_VERSION}" == "cos"* ]]; then
+      DEFAULT_GCI_PROJECT=cos-cloud
+  fi
+  MASTER_IMAGE_PROJECT=${KUBE_GCE_MASTER_PROJECT:-${DEFAULT_GCI_PROJECT}}
+
   run-gcloud-compute-with-retries instances create "${MASTER_NAME}" \
     ${GCLOUD_COMMON_ARGS} \
     --address "${MASTER_IP}" \