diff --git a/api/openapi-spec/swagger.json b/api/openapi-spec/swagger.json
index 597455d6b2e..62d129aeaa2 100644
--- a/api/openapi-spec/swagger.json
+++ b/api/openapi-spec/swagger.json
@@ -2534,8 +2534,7 @@
       },
       "required": [
         "currentReplicas",
-        "desiredReplicas",
-        "conditions"
+        "desiredReplicas"
       ],
       "type": "object"
     },
@@ -3093,8 +3092,7 @@
       },
       "required": [
         "currentReplicas",
-        "desiredReplicas",
-        "conditions"
+        "desiredReplicas"
       ],
       "type": "object"
     },
diff --git a/staging/src/k8s.io/api/autoscaling/v2beta1/generated.proto b/staging/src/k8s.io/api/autoscaling/v2beta1/generated.proto
index 5ad55fa7277..27f9ab45c4e 100644
--- a/staging/src/k8s.io/api/autoscaling/v2beta1/generated.proto
+++ b/staging/src/k8s.io/api/autoscaling/v2beta1/generated.proto
@@ -248,6 +248,7 @@ message HorizontalPodAutoscalerStatus {
 
   // conditions is the set of conditions required for this autoscaler to scale its target,
   // and indicates whether or not those conditions are met.
+  // +optional
   repeated HorizontalPodAutoscalerCondition conditions = 6;
 }
 
diff --git a/staging/src/k8s.io/api/autoscaling/v2beta1/types.go b/staging/src/k8s.io/api/autoscaling/v2beta1/types.go
index 05023d9bcf4..c49c5e0c526 100644
--- a/staging/src/k8s.io/api/autoscaling/v2beta1/types.go
+++ b/staging/src/k8s.io/api/autoscaling/v2beta1/types.go
@@ -264,6 +264,7 @@ type HorizontalPodAutoscalerStatus struct {
 
 	// conditions is the set of conditions required for this autoscaler to scale its target,
 	// and indicates whether or not those conditions are met.
+	// +optional
 	Conditions []HorizontalPodAutoscalerCondition `json:"conditions" protobuf:"bytes,6,rep,name=conditions"`
 }
 
diff --git a/staging/src/k8s.io/api/autoscaling/v2beta2/generated.proto b/staging/src/k8s.io/api/autoscaling/v2beta2/generated.proto
index 77a6cb379ee..7dee1447040 100644
--- a/staging/src/k8s.io/api/autoscaling/v2beta2/generated.proto
+++ b/staging/src/k8s.io/api/autoscaling/v2beta2/generated.proto
@@ -272,6 +272,7 @@ message HorizontalPodAutoscalerStatus {
 
   // conditions is the set of conditions required for this autoscaler to scale its target,
   // and indicates whether or not those conditions are met.
+  // +optional
   repeated HorizontalPodAutoscalerCondition conditions = 6;
 }
 
diff --git a/staging/src/k8s.io/api/autoscaling/v2beta2/types.go b/staging/src/k8s.io/api/autoscaling/v2beta2/types.go
index 1be548d0afe..7619f1e009c 100644
--- a/staging/src/k8s.io/api/autoscaling/v2beta2/types.go
+++ b/staging/src/k8s.io/api/autoscaling/v2beta2/types.go
@@ -373,6 +373,7 @@ type HorizontalPodAutoscalerStatus struct {
 
 	// conditions is the set of conditions required for this autoscaler to scale its target,
 	// and indicates whether or not those conditions are met.
+	// +optional
 	Conditions []HorizontalPodAutoscalerCondition `json:"conditions" protobuf:"bytes,6,rep,name=conditions"`
 }