diff --git a/.github/workflows/notify-pr.yml b/.github/workflows/notify-pr.yml
index c985559..d35c111 100644
--- a/.github/workflows/notify-pr.yml
+++ b/.github/workflows/notify-pr.yml
@@ -7,10 +7,9 @@ jobs:
     runs-on: ubuntu-latest
     name: Pull Request Notification
     steps:
-      - run: |
-          echo "{\"text\":\"Vultr-CSI : PR https://github.com/${{ github.repository }}/pull/${{ github.event.number }} \"}" > mattermost.json
-      - uses: mattermost/action-mattermost-notify@2.0.0
+      - uses: mattermost/action-mattermost-notify@master
         with:
           MATTERMOST_WEBHOOK_URL: ${{ secrets.MATTERMOST_WEBHOOK_URL }}
-          MATTERMOST_USERNAME: ${{ secrets.MATTERMOST_USERNAME}}
-          MATTERMOST_ICON: ${{ secrets.MATTERMOST_ICON }}
+          MATTERMOST_USERNAME: ${{ secrets.MATTERMOST_USERNAME }}
+          MATTERMOST_ICON_URL: ${{ secrets.MATTERMOST_ICON_URL }}
+          TEXT: "${{ github.repository }} : PR https://github.com/${{ github.repository }}/pull/${{ github.event.number }}"
\ No newline at end of file
diff --git a/driver/driver_test.go b/driver/driver_test.go
index 7cfa7b7..d96fa9c 100644
--- a/driver/driver_test.go
+++ b/driver/driver_test.go
@@ -51,8 +51,7 @@ func TestDriverSuite(t *testing.T) {
 
 		waitTimeout: defaultTimeout,
 
-		log:      log,
-		vMounter: NewFakeMounter(log),
+		log: log,
 	}
 
 	go d.Run()
@@ -66,49 +65,3 @@ func TestDriverSuite(t *testing.T) {
 		t.Errorf("driver run failed: %s", err)
 	}
 }
-
-type fakeMounter struct {
-	log     *logrus.Entry
-	mounted map[string]string
-}
-
-func NewFakeMounter(log *logrus.Entry) *fakeMounter {
-	return &fakeMounter{log: log}
-}
-
-func (f *fakeMounter) Format(source, fs string) error {
-	return nil
-}
-
-func (f *fakeMounter) IsFormatted(source string) (bool, error) {
-	return true, nil
-}
-
-func (f *fakeMounter) Mount(source, target, fs string, opts ...string) error {
-	return nil
-}
-
-func (f *fakeMounter) IsMounted(target string) (bool, error) {
-	return true, nil
-}
-
-func (f *fakeMounter) UnMount(target string) error {
-	delete(f.mounted, target)
-	return nil
-}
-
-func (f *fakeMounter) GetStatistics(volumePath string) (volumeStatistics, error) {
-	return volumeStatistics{
-		availableBytes: 3 * giB,
-		totalBytes:     10 * giB,
-		usedBytes:      7 * giB,
-
-		availableInodes: 3000,
-		totalInodes:     10000,
-		usedInodes:      7000,
-	}, nil
-}
-
-func (f *fakeMounter) IsBlockDevice(volumePath string) (bool, error) {
-	return false, nil
-}