diff --git a/api/v1beta1/types.go b/api/v1beta1/types.go
index ef0eea58..1f3cdf4f 100644
--- a/api/v1beta1/types.go
+++ b/api/v1beta1/types.go
@@ -860,6 +860,7 @@ type Subnet struct {
 	// DnsLabel DNS label for the subnet, used in conjunction with the VNIC's hostname and
 	// VCN's DNS label to form a fully qualified domain name (FQDN) for each VNIC
 	// within this subnet (for example, `bminstance1.subnet123.vcn1.oraclevcn.com`).
+	// +optional
 	DnsLabel *string `json:"dnsLabel,omitempty"`
 }
 
@@ -929,6 +930,7 @@ type VCN struct {
 	// DnsLabel specifies a DNS label for the VCN, used in conjunction with the VNIC's hostname and
 	// subnet's DNS label to form a fully qualified domain name (FQDN) for each VNIC
 	// within this subnet (for example, `bminstance1.subnet123.vcn1.oraclevcn.com`).
+	// +optional
 	DnsLabel *string `json:"dnsLabel,omitempty"`
 }
 
diff --git a/api/v1beta2/types.go b/api/v1beta2/types.go
index a895c867..7a77856e 100644
--- a/api/v1beta2/types.go
+++ b/api/v1beta2/types.go
@@ -853,6 +853,7 @@ type Subnet struct {
 	// DnsLabel DNS label for the subnet, used in conjunction with the VNIC's hostname and
 	// VCN's DNS label to form a fully qualified domain name (FQDN) for each VNIC
 	// within this subnet (for example, `bminstance1.subnet123.vcn1.oraclevcn.com`).
+	// +optional
 	DnsLabel *string `json:"dnsLabel,omitempty"`
 }
 
@@ -916,6 +917,7 @@ type VCN struct {
 	// DnsLabel specifies a DNS label for the VCN, used in conjunction with the VNIC's hostname and
 	// subnet's DNS label to form a fully qualified domain name (FQDN) for each VNIC
 	// within this subnet (for example, `bminstance1.subnet123.vcn1.oraclevcn.com`).
+	// +optional
 	DnsLabel *string `json:"dnsLabel,omitempty"`
 }