diff --git a/cloud/services/container/clusters/reconcile.go b/cloud/services/container/clusters/reconcile.go
index 3d37e6da7..500681ae4 100644
--- a/cloud/services/container/clusters/reconcile.go
+++ b/cloud/services/container/clusters/reconcile.go
@@ -386,6 +386,8 @@ func convertToSdkReleaseChannel(channel *infrav1exp.ReleaseChannel) containerpb.
 		return containerpb.ReleaseChannel_REGULAR
 	case infrav1exp.Stable:
 		return containerpb.ReleaseChannel_STABLE
+	case infrav1exp.Extended:
+		return containerpb.ReleaseChannel_EXTENDED
 	default:
 		return containerpb.ReleaseChannel_UNSPECIFIED
 	}
diff --git a/config/crd/bases/infrastructure.cluster.x-k8s.io_gcpmanagedcontrolplanes.yaml b/config/crd/bases/infrastructure.cluster.x-k8s.io_gcpmanagedcontrolplanes.yaml
index 1b8d13225..5edc8b716 100644
--- a/config/crd/bases/infrastructure.cluster.x-k8s.io_gcpmanagedcontrolplanes.yaml
+++ b/config/crd/bases/infrastructure.cluster.x-k8s.io_gcpmanagedcontrolplanes.yaml
@@ -223,6 +223,7 @@ spec:
                 - rapid
                 - regular
                 - stable
+                - extended
                 type: string
               version:
                 description: |-
diff --git a/exp/api/v1beta1/gcpmanagedcontrolplane_types.go b/exp/api/v1beta1/gcpmanagedcontrolplane_types.go
index 53ecffcdd..ea7717937 100644
--- a/exp/api/v1beta1/gcpmanagedcontrolplane_types.go
+++ b/exp/api/v1beta1/gcpmanagedcontrolplane_types.go
@@ -231,7 +231,7 @@ type GCPManagedControlPlaneList struct {
 }
 
 // ReleaseChannel is the release channel of the GKE cluster
-// +kubebuilder:validation:Enum=rapid;regular;stable
+// +kubebuilder:validation:Enum=rapid;regular;stable;extended
 type ReleaseChannel string
 
 const (
@@ -241,6 +241,8 @@ const (
 	Regular ReleaseChannel = "regular"
 	// Stable release channel.
 	Stable ReleaseChannel = "stable"
+	// Extended release channel.
+	Extended ReleaseChannel = "extended"
 )
 
 // MasterAuthorizedNetworksConfig contains configuration options for the master authorized networks feature.