diff --git a/staging/src/k8s.io/api/scheduling/v1/generated.proto b/staging/src/k8s.io/api/scheduling/v1/generated.proto
index 374e68238b5..27c336bc974 100644
--- a/staging/src/k8s.io/api/scheduling/v1/generated.proto
+++ b/staging/src/k8s.io/api/scheduling/v1/generated.proto
@@ -39,6 +39,7 @@ message PriorityClass {
 
   // value represents the integer value of this priority class. This is the actual priority that pods
   // receive when they have the name of this class in their pod spec.
+  // +required
   optional int32 value = 2;
 
   // globalDefault specifies whether this PriorityClass should be considered as
@@ -69,6 +70,7 @@ message PriorityClassList {
   optional .k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1;
 
   // items is the list of PriorityClasses
+  // +required
   repeated PriorityClass items = 2;
 }
 
diff --git a/staging/src/k8s.io/api/scheduling/v1alpha1/generated.proto b/staging/src/k8s.io/api/scheduling/v1alpha1/generated.proto
index 6014f60e20c..5ecddd3fe13 100644
--- a/staging/src/k8s.io/api/scheduling/v1alpha1/generated.proto
+++ b/staging/src/k8s.io/api/scheduling/v1alpha1/generated.proto
@@ -86,6 +86,7 @@ message PriorityClass {
 
   // value represents the integer value of this priority class. This is the actual priority that pods
   // receive when they have the name of this class in their pod spec.
+  // +required
   optional int32 value = 2;
 
   // globalDefault specifies whether this PriorityClass should be considered as
@@ -116,6 +117,7 @@ message PriorityClassList {
   optional .k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1;
 
   // items is the list of PriorityClasses
+  // +required
   repeated PriorityClass items = 2;
 }
 
@@ -166,6 +168,7 @@ message WorkloadList {
   optional .k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1;
 
   // Items is the list of Workloads.
+  // +required
   repeated Workload items = 2;
 }
 
diff --git a/staging/src/k8s.io/api/scheduling/v1beta1/generated.proto b/staging/src/k8s.io/api/scheduling/v1beta1/generated.proto
index 7f77b01753f..1f0cf86b20e 100644
--- a/staging/src/k8s.io/api/scheduling/v1beta1/generated.proto
+++ b/staging/src/k8s.io/api/scheduling/v1beta1/generated.proto
@@ -40,6 +40,7 @@ message PriorityClass {
 
   // value represents the integer value of this priority class. This is the actual priority that pods
   // receive when they have the name of this class in their pod spec.
+  // +required
   optional int32 value = 2;
 
   // globalDefault specifies whether this PriorityClass should be considered as
@@ -70,6 +71,7 @@ message PriorityClassList {
   optional .k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1;
 
   // items is the list of PriorityClasses
+  // +required
   repeated PriorityClass items = 2;
 }