diff --git a/docs/addons.md b/docs/addons.md
index 4d85cd0dfb..833ea564b6 100644
--- a/docs/addons.md
+++ b/docs/addons.md
@@ -46,7 +46,7 @@ spec:
     memoryRequest: "300Mi"
 ```
 
-Read more about cluster autoscaler in the [official documentation](https://github.com/kubernetes/autoscaler/tree/master/cluster-autoscaler).
+Read more about cluster autoscaler in the [official documentation](https://github.com/kubernetes/autoscaler/tree/master/cluster-autoscaler). The autoscaler supports five different expander strategies; the `priority` expander requires additional configuration in a ConfigMap as described in [its documentation](https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/expander/priority/readme.md).
 
 ##### Disabling cluster autoscaler for a given instance group
 {{ kops_feature_table(kops_added_default='1.20') }}
diff --git a/k8s/crds/kops.k8s.io_clusters.yaml b/k8s/crds/kops.k8s.io_clusters.yaml
index eff5ec6c5b..aaec658e39 100644
--- a/k8s/crds/kops.k8s.io_clusters.yaml
+++ b/k8s/crds/kops.k8s.io_clusters.yaml
@@ -622,7 +622,8 @@ spec:
                   expander:
                     description: 'Expander determines the strategy for which instance
                       group gets expanded. Supported values: least-waste, most-pods,
-                      random. Default: least-waste'
+                      random, price, priority. The priority expander requires additional 
+                      configuration via a ConfigMap. Default: least-waste'
                     type: string
                   image:
                     description: 'Image is the docker container used. Default: the
diff --git a/pkg/apis/kops/componentconfig.go b/pkg/apis/kops/componentconfig.go
index 90d4d7531a..8a0f7ae640 100644
--- a/pkg/apis/kops/componentconfig.go
+++ b/pkg/apis/kops/componentconfig.go
@@ -958,7 +958,7 @@ type ClusterAutoscalerConfig struct {
 	// Default: false
 	Enabled *bool `json:"enabled,omitempty"`
 	// Expander determines the strategy for which instance group gets expanded.
-	// Supported values: least-waste, most-pods, random.
+	// Supported values: least-waste, most-pods, random, price, priority.
 	// Default: least-waste
 	Expander *string `json:"expander,omitempty"`
 	// BalanceSimilarNodeGroups makes cluster autoscaler treat similar node groups as one.
diff --git a/pkg/apis/kops/v1alpha2/componentconfig.go b/pkg/apis/kops/v1alpha2/componentconfig.go
index 605dbdd8cd..07901b4f08 100644
--- a/pkg/apis/kops/v1alpha2/componentconfig.go
+++ b/pkg/apis/kops/v1alpha2/componentconfig.go
@@ -978,7 +978,7 @@ type ClusterAutoscalerConfig struct {
 	// Default: false
 	Enabled *bool `json:"enabled,omitempty"`
 	// Expander determines the strategy for which instance group gets expanded.
-	// Supported values: least-waste, most-pods, random.
+	// Supported values: least-waste, most-pods, random, price, priority.
 	// Default: least-waste
 	Expander *string `json:"expander,omitempty"`
 	// BalanceSimilarNodeGroups makes cluster autoscaler treat similar node groups as one.
diff --git a/pkg/apis/kops/v1alpha3/componentconfig.go b/pkg/apis/kops/v1alpha3/componentconfig.go
index bfabfa2188..8b10d90507 100644
--- a/pkg/apis/kops/v1alpha3/componentconfig.go
+++ b/pkg/apis/kops/v1alpha3/componentconfig.go
@@ -955,7 +955,7 @@ type ClusterAutoscalerConfig struct {
 	// Default: false
 	Enabled *bool `json:"enabled,omitempty"`
 	// Expander determines the strategy for which instance group gets expanded.
-	// Supported values: least-waste, most-pods, random.
+	// Supported values: least-waste, most-pods, random, price, priority.
 	// Default: least-waste
 	Expander *string `json:"expander,omitempty"`
 	// BalanceSimilarNodeGroups makes cluster autoscaler treat similar node groups as one.
diff --git a/pkg/apis/kops/validation/validation.go b/pkg/apis/kops/validation/validation.go
index f984a2fb0d..48d91da58b 100644
--- a/pkg/apis/kops/validation/validation.go
+++ b/pkg/apis/kops/validation/validation.go
@@ -1492,7 +1492,7 @@ func validateNodeLocalDNS(spec *kops.ClusterSpec, fldpath *field.Path) field.Err
 }
 
 func validateClusterAutoscaler(cluster *kops.Cluster, spec *kops.ClusterAutoscalerConfig, fldPath *field.Path) (allErrs field.ErrorList) {
-	allErrs = append(allErrs, IsValidValue(fldPath.Child("expander"), spec.Expander, []string{"least-waste", "random", "most-pods"})...)
+	allErrs = append(allErrs, IsValidValue(fldPath.Child("expander"), spec.Expander, []string{"least-waste", "random", "most-pods", "price", "priority"})...)
 
 	if kops.CloudProviderID(cluster.Spec.CloudProvider) == kops.CloudProviderOpenstack {
 		allErrs = append(allErrs, field.Forbidden(fldPath, "Cluster autoscaler is not supported on OpenStack"))