diff --git a/client.go b/client.go
index 020021b..6dd5b89 100644
--- a/client.go
+++ b/client.go
@@ -943,6 +943,7 @@ func mergeUpgradeOptions(chartSpec *ChartSpec, upgradeOptions *action.Upgrade) {
 	upgradeOptions.Force = chartSpec.Force
 	upgradeOptions.ResetValues = chartSpec.ResetValues
 	upgradeOptions.ReuseValues = chartSpec.ReuseValues
+	upgradeOptions.ResetThenReuseValues = chartSpec.ResetThenReuseValues
 	upgradeOptions.Recreate = chartSpec.Recreate
 	upgradeOptions.MaxHistory = chartSpec.MaxHistory
 	upgradeOptions.Atomic = chartSpec.Atomic
diff --git a/types.go b/types.go
index b5999ff..2256b00 100644
--- a/types.go
+++ b/types.go
@@ -176,6 +176,9 @@ type ChartSpec struct {
 	// ReuseValues indicates whether to reuse the values.yaml file during installation.
 	// +optional
 	ReuseValues bool `json:"reuseValues,omitempty"`
+	// ResetThenReuseValues will reset the values to the chart's built-ins then merge with user's last supplied values.
+	// +optional
+	ResetThenReuseValues bool
 	// Recreate indicates whether to recreate the release if it already exists.
 	// +optional
 	Recreate bool `json:"recreate,omitempty"`