diff --git a/charts/latest/csi-driver-nfs-v3.0.0.tgz b/charts/latest/csi-driver-nfs-v3.0.0.tgz
index 1a23c87f..3eac56fa 100644
Binary files a/charts/latest/csi-driver-nfs-v3.0.0.tgz and b/charts/latest/csi-driver-nfs-v3.0.0.tgz differ
diff --git a/charts/latest/csi-driver-nfs/templates/csi-nfs-controller.yaml b/charts/latest/csi-driver-nfs/templates/csi-nfs-controller.yaml
index a261f2fa..61b10c99 100755
--- a/charts/latest/csi-driver-nfs/templates/csi-nfs-controller.yaml
+++ b/charts/latest/csi-driver-nfs/templates/csi-nfs-controller.yaml
@@ -44,7 +44,7 @@ spec:
           resources:
             limits:
               cpu: 100m
-              memory: 200Mi
+              memory: 100Mi
             requests:
               cpu: 10m
               memory: 20Mi
diff --git a/deploy/csi-nfs-controller.yaml b/deploy/csi-nfs-controller.yaml
index 1b6c6ec2..a85d94b7 100644
--- a/deploy/csi-nfs-controller.yaml
+++ b/deploy/csi-nfs-controller.yaml
@@ -39,7 +39,7 @@ spec:
           resources:
             limits:
               cpu: 100m
-              memory: 200Mi
+              memory: 100Mi
             requests:
               cpu: 10m
               memory: 20Mi
diff --git a/hack/verify-helm-chart-files.sh b/hack/verify-helm-chart-files.sh
index f7705c8a..13e2af8f 100755
--- a/hack/verify-helm-chart-files.sh
+++ b/hack/verify-helm-chart-files.sh
@@ -17,6 +17,7 @@
 set -euo pipefail
 
 echo "begin to verify chart tgz files ..."
+git config core.filemode false
 
 # verify whether chart config has changed
 diff=`git diff`
@@ -46,3 +47,9 @@ if [[ -n "${diff}" ]]; then
 fi
 
 echo "chart tgz files verified."
+
+echo "verify helm chart index ..."
+curl https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3 | bash
+helm repo add csi-driver-smb https://raw.githubusercontent.com/kubernetes-csi/csi-driver-nfs/master/charts
+helm search repo -l csi-driver-nfs
+echo "helm chart index verified."