diff --git a/cmd/sync.go b/cmd/sync.go
index 1d8ed45f..3bd80e6f 100644
--- a/cmd/sync.go
+++ b/cmd/sync.go
@@ -46,6 +46,7 @@ func NewSyncCmd(globalCfg *config.GlobalImpl) *cobra.Command {
 	f.BoolVar(&syncOptions.SyncReleaseLabels, "sync-release-labels", false, "sync release labels to the target release")
 	f.BoolVar(&syncOptions.Wait, "wait", false, `Override helmDefaults.wait setting "helm upgrade --install --wait"`)
 	f.BoolVar(&syncOptions.WaitForJobs, "wait-for-jobs", false, `Override helmDefaults.waitForJobs setting "helm upgrade --install --wait-for-jobs"`)
+	f.IntVar(&syncOptions.Timeout, "timeout", 0, `Override helmDefaults.timeout setting "helm upgrade --install --timeout" (default 0, which means no timeout)`)
 	f.BoolVar(&syncOptions.ReuseValues, "reuse-values", false, `Override helmDefaults.reuseValues "helm upgrade --install --reuse-values"`)
 	f.BoolVar(&syncOptions.ResetValues, "reset-values", false, `Override helmDefaults.reuseValues "helm upgrade --install --reset-values"`)
 	f.StringVar(&syncOptions.PostRenderer, "post-renderer", "", `pass --post-renderer to "helm template" or "helm upgrade --install"`)
diff --git a/pkg/config/sync.go b/pkg/config/sync.go
index 71d38034..8d68aba8 100644
--- a/pkg/config/sync.go
+++ b/pkg/config/sync.go
@@ -24,6 +24,8 @@ type SyncOptions struct {
 	WaitRetries int
 	// WaitForJobs is the wait for jobs flag
 	WaitForJobs bool
+	// Timeout is the timeout flag in seconds
+	Timeout int
 	// ReuseValues is true if the helm command should reuse the values
 	ReuseValues bool
 	// ResetValues is true if helm command should reset values to charts' default
@@ -124,6 +126,11 @@ func (t *SyncImpl) WaitForJobs() bool {
 	return t.SyncOptions.WaitForJobs
 }
 
+// Timeout returns the timeout
+func (t *SyncImpl) Timeout() int {
+	return t.SyncOptions.Timeout
+}
+
 // ReuseValues returns the ReuseValues.
 func (t *SyncImpl) ReuseValues() bool {
 	if !t.ResetValues() {
diff --git a/pkg/state/state.go b/pkg/state/state.go
index 60289117..4b2b14a7 100644
--- a/pkg/state/state.go
+++ b/pkg/state/state.go
@@ -807,6 +807,7 @@ type SyncOpts struct {
 	Wait                 bool
 	WaitRetries          int
 	WaitForJobs          bool
+	Timeout              int
 	SyncReleaseLabels    bool
 	ReuseValues          bool
 	ResetValues          bool
@@ -2271,7 +2272,7 @@ func (st *HelmState) TestReleases(helm helmexec.Interface, cleanup bool, timeout
 		}
 
 		if timeout == EmptyTimeout {
-			flags = append(flags, st.timeoutFlags(&release)...)
+			flags = append(flags, st.timeoutFlags(&release, nil)...)
 		} else {
 			duration := strconv.Itoa(timeout)
 			duration += "s"
@@ -2751,13 +2752,16 @@ func (st *HelmState) needsInsecureSkipTLSVerify(release *ReleaseSpec, repo *Repo
 	return relSkipTLSVerify || st.HelmDefaults.InsecureSkipTLSVerify || repoSkipTLSVerify
 }
 
-func (st *HelmState) timeoutFlags(release *ReleaseSpec) []string {
+func (st *HelmState) timeoutFlags(release *ReleaseSpec, ops *SyncOpts) []string {
 	var flags []string
 
 	timeout := st.HelmDefaults.Timeout
 	if release.Timeout != nil {
 		timeout = *release.Timeout
 	}
+	if ops != nil && ops.Timeout > 0 {
+		timeout = ops.Timeout
+	}
 	if timeout != 0 {
 		duration := strconv.Itoa(timeout)
 		duration += "s"
@@ -2783,7 +2787,7 @@ func (st *HelmState) flagsForUpgrade(helm helmexec.Interface, release *ReleaseSp
 		flags = st.appendKeyringFlags(flags, release)
 	}
 
-	flags = append(flags, st.timeoutFlags(release)...)
+	flags = append(flags, st.timeoutFlags(release, opt)...)
 
 	if release.Force != nil && *release.Force || release.Force == nil && st.HelmDefaults.Force {
 		flags = append(flags, "--force")
diff --git a/pkg/state/state_test.go b/pkg/state/state_test.go
index 4834ba1c..878dbab5 100644
--- a/pkg/state/state_test.go
+++ b/pkg/state/state_test.go
@@ -166,12 +166,13 @@ func TestHelmState_flagsForUpgrade(t *testing.T) {
 	}
 
 	tests := []struct {
-		name     string
-		version  *semver.Version
-		defaults HelmSpec
-		release  *ReleaseSpec
-		want     []string
-		wantErr  string
+		name      string
+		version   *semver.Version
+		defaults  HelmSpec
+		release   *ReleaseSpec
+		syncOpts  *SyncOpts
+		want      []string
+		wantErr   string
 	}{
 		{
 			name: "no-options",
@@ -455,6 +456,27 @@ func TestHelmState_flagsForUpgrade(t *testing.T) {
 				"--namespace", "test-namespace",
 			},
 		},
+		{
+			name: "timeout-from-cli-flag",
+			defaults: HelmSpec{
+				Timeout: 123,
+			},
+			release: &ReleaseSpec{
+				Chart:     "test/chart",
+				Version:   "0.1",
+				Timeout:   some(456),
+				Name:      "test-charts",
+				Namespace: "test-namespace",
+			},
+			syncOpts: &SyncOpts{
+				Timeout: 789,
+			},
+			want: []string{
+				"--version", "0.1",
+				"--timeout", "789s",
+				"--namespace", "test-namespace",
+			},
+		},
 		{
 			name: "atomic",
 			defaults: HelmSpec{
@@ -737,7 +759,7 @@ func TestHelmState_flagsForUpgrade(t *testing.T) {
 				Version: tt.version,
 			}
 
-			args, _, err := state.flagsForUpgrade(helm, tt.release, 0, nil)
+			args, _, err := state.flagsForUpgrade(helm, tt.release, 0, tt.syncOpts)
 			if err != nil && tt.wantErr == "" {
 				t.Errorf("unexpected error flagsForUpgrade: %v", err)
 			}