diff --git a/pkg/api/types.go b/pkg/api/types.go
index 8f4cf5e3..45a66361 100644
--- a/pkg/api/types.go
+++ b/pkg/api/types.go
@@ -385,6 +385,9 @@ const (
 	// BetaStorageClassAnnotation represents the beta/previous StorageClass annotation.
 	// It's currently still used and will be held for backwards compatibility
 	BetaStorageClassAnnotation = "volume.beta.kubernetes.io/storage-class"
+
+	// MountOptionAnnotation defines mount option annotation used in PVs
+	MountOptionAnnotation = "volume.beta.kubernetes.io/mount-options"
 )
 
 // +genclient=true
diff --git a/pkg/api/v1/types.go b/pkg/api/v1/types.go
index 461e27dc..0ce815b3 100644
--- a/pkg/api/v1/types.go
+++ b/pkg/api/v1/types.go
@@ -434,6 +434,9 @@ const (
 	// BetaStorageClassAnnotation represents the beta/previous StorageClass annotation.
 	// It's currently still used and will be held for backwards compatibility
 	BetaStorageClassAnnotation = "volume.beta.kubernetes.io/storage-class"
+
+	// MountOptionAnnotation defines mount option annotation used in PVs
+	MountOptionAnnotation = "volume.beta.kubernetes.io/mount-options"
 )
 
 // +genclient=true