diff --git a/work/v1/0000_00_work.open-cluster-management.io_manifestworks.crd.yaml b/work/v1/0000_00_work.open-cluster-management.io_manifestworks.crd.yaml
index 4100bf2ac..a15286dfe 100644
--- a/work/v1/0000_00_work.open-cluster-management.io_manifestworks.crd.yaml
+++ b/work/v1/0000_00_work.open-cluster-management.io_manifestworks.crd.yaml
@@ -163,7 +163,7 @@ spec:
                             description: Resource is the resource name of the Kubernetes resource.
                             type: string
                       updateStrategy:
-                        description: UpdateStrategy defines the strategy to update this manifest. UpdateStrategy is Update if it is not set, optional
+                        description: UpdateStrategy defines the strategy to update this manifest. UpdateStrategy is Update if it is not set.
                         type: object
                         required:
                           - type
diff --git a/work/v1/types.go b/work/v1/types.go
index efa94f1ca..36a66bc22 100644
--- a/work/v1/types.go
+++ b/work/v1/types.go
@@ -92,9 +92,9 @@ type ManifestConfigOption struct {
 	FeedbackRules []FeedbackRule `json:"feedbackRules,omitempty"`
 
 	// UpdateStrategy defines the strategy to update this manifest. UpdateStrategy is Update
-	// if it is not set,
-	// optional
-	UpdateStrategy *UpdateStrategy `json:"updateStrategy"`
+	// if it is not set.
+	// +optional
+	UpdateStrategy *UpdateStrategy `json:"updateStrategy,omitempty"`
 }
 
 // ManifestWorkExecutor is the executor that applies the resources to the managed cluster. i.e. the
diff --git a/work/v1/zz_generated.swagger_doc_generated.go b/work/v1/zz_generated.swagger_doc_generated.go
index 838080f7c..c82a457dc 100644
--- a/work/v1/zz_generated.swagger_doc_generated.go
+++ b/work/v1/zz_generated.swagger_doc_generated.go
@@ -133,7 +133,7 @@ var map_ManifestConfigOption = map[string]string{
 	"":                   "ManifestConfigOption represents the configurations of a manifest defined in workload field.",
 	"resourceIdentifier": "ResourceIdentifier represents the group, resource, name and namespace of a resoure. iff this refers to a resource not created by this manifest work, the related rules will not be executed.",
 	"feedbackRules":      "FeedbackRules defines what resource status field should be returned. If it is not set or empty, no feedback rules will be honored.",
-	"updateStrategy":     "UpdateStrategy defines the strategy to update this manifest. UpdateStrategy is Update if it is not set, optional",
+	"updateStrategy":     "UpdateStrategy defines the strategy to update this manifest. UpdateStrategy is Update if it is not set.",
 }
 
 func (ManifestConfigOption) SwaggerDoc() map[string]string {
diff --git a/work/v1alpha1/0000_00_work.open-cluster-management.io_placemanifestworks.crd.yaml b/work/v1alpha1/0000_00_work.open-cluster-management.io_placemanifestworks.crd.yaml
index 6f79dc2eb..5df48ed8e 100644
--- a/work/v1alpha1/0000_00_work.open-cluster-management.io_placemanifestworks.crd.yaml
+++ b/work/v1alpha1/0000_00_work.open-cluster-management.io_placemanifestworks.crd.yaml
@@ -187,7 +187,7 @@ spec:
                                 description: Resource is the resource name of the Kubernetes resource.
                                 type: string
                           updateStrategy:
-                            description: UpdateStrategy defines the strategy to update this manifest. UpdateStrategy is Update if it is not set, optional
+                            description: UpdateStrategy defines the strategy to update this manifest. UpdateStrategy is Update if it is not set.
                             type: object
                             required:
                               - type