diff --git a/staging/src/k8s.io/api/storage/v1/generated.proto b/staging/src/k8s.io/api/storage/v1/generated.proto
index 93f82f576c9..46ac1fcb814 100644
--- a/staging/src/k8s.io/api/storage/v1/generated.proto
+++ b/staging/src/k8s.io/api/storage/v1/generated.proto
@@ -137,6 +137,7 @@ message CSIDriverSpec {
   // feature is enabled. The default is false.
   //
   // +optional
+  // +featureGate=CSIStorageCapacity
   optional bool storageCapacity = 4;
 
   // Defines if the underlying volume supports changing ownership and
diff --git a/staging/src/k8s.io/api/storage/v1/types.go b/staging/src/k8s.io/api/storage/v1/types.go
index 9fa40eebe33..ba27fa36852 100644
--- a/staging/src/k8s.io/api/storage/v1/types.go
+++ b/staging/src/k8s.io/api/storage/v1/types.go
@@ -335,6 +335,7 @@ type CSIDriverSpec struct {
 	// feature is enabled. The default is false.
 	//
 	// +optional
+	// +featureGate=CSIStorageCapacity
 	StorageCapacity *bool `json:"storageCapacity,omitempty" protobuf:"bytes,4,opt,name=storageCapacity"`
 
 	// Defines if the underlying volume supports changing ownership and
diff --git a/staging/src/k8s.io/api/storage/v1beta1/generated.proto b/staging/src/k8s.io/api/storage/v1beta1/generated.proto
index 2693f672d53..a1555ee31d8 100644
--- a/staging/src/k8s.io/api/storage/v1beta1/generated.proto
+++ b/staging/src/k8s.io/api/storage/v1beta1/generated.proto
@@ -139,6 +139,7 @@ message CSIDriverSpec {
   // feature is enabled. The default is false.
   //
   // +optional
+  // +featureGate=CSIStorageCapacity
   optional bool storageCapacity = 4;
 
   // Defines if the underlying volume supports changing ownership and
diff --git a/staging/src/k8s.io/api/storage/v1beta1/types.go b/staging/src/k8s.io/api/storage/v1beta1/types.go
index 281d02d771c..1a20de64ecb 100644
--- a/staging/src/k8s.io/api/storage/v1beta1/types.go
+++ b/staging/src/k8s.io/api/storage/v1beta1/types.go
@@ -356,6 +356,7 @@ type CSIDriverSpec struct {
 	// feature is enabled. The default is false.
 	//
 	// +optional
+	// +featureGate=CSIStorageCapacity
 	StorageCapacity *bool `json:"storageCapacity,omitempty" protobuf:"bytes,4,opt,name=storageCapacity"`
 
 	// Defines if the underlying volume supports changing ownership and