diff --git a/pkg/api/persistentvolumeclaim/util.go b/pkg/api/persistentvolumeclaim/util.go
index 4334afcca59..1304c1fe048 100644
--- a/pkg/api/persistentvolumeclaim/util.go
+++ b/pkg/api/persistentvolumeclaim/util.go
@@ -49,6 +49,10 @@ func DropDisabledFields(pvcSpec, oldPVCSpec *core.PersistentVolumeClaimSpec) {
 			pvcSpec.DataSourceRef = nil
 		}
 	}
+
+	// Setting VolumeClaimTemplate.Resources.Claims should have been caught by validation when
+	// extending ResourceRequirements in 1.26. Now we can only accept it and drop the field.
+	pvcSpec.Resources.Claims = nil
 }
 
 // EnforceDataSourceBackwardsCompatibility drops the data source field under certain conditions
diff --git a/pkg/api/persistentvolumeclaim/util_test.go b/pkg/api/persistentvolumeclaim/util_test.go
index 945ff2f0446..ebbb0fecb5c 100644
--- a/pkg/api/persistentvolumeclaim/util_test.go
+++ b/pkg/api/persistentvolumeclaim/util_test.go
@@ -263,6 +263,9 @@ func TestDataSourceFilter(t *testing.T) {
 			anyEnabled: true,
 			wantRef:    xnsVolumeDataSourceRef, // existing field isn't dropped.
 		},
+		"clear Resources.Claims": {
+			spec: core.PersistentVolumeClaimSpec{Resources: core.ResourceRequirements{Claims: []core.ResourceClaim{{Name: "dra"}}}},
+		},
 	}
 
 	for testName, test := range tests {
@@ -278,6 +281,9 @@ func TestDataSourceFilter(t *testing.T) {
 				t.Errorf("expected condition was not met, test: %s, anyEnabled: %v, xnsEnabled: %v, spec: %+v, expected DataSourceRef: %+v",
 					testName, test.anyEnabled, test.xnsEnabled, test.spec, test.wantRef)
 			}
+			if test.spec.Resources.Claims != nil {
+				t.Errorf("expected Resources.Claims to be cleared")
+			}
 		})
 	}
 }
diff --git a/pkg/api/pod/util.go b/pkg/api/pod/util.go
index 9cc7aeb1156..95d9f876b77 100644
--- a/pkg/api/pod/util.go
+++ b/pkg/api/pod/util.go
@@ -577,6 +577,16 @@ func dropDisabledDynamicResourceAllocationFields(podSpec, oldPodSpec *api.PodSpe
 		dropEphemeralResourceClaimRequests(podSpec.EphemeralContainers)
 		podSpec.ResourceClaims = nil
 	}
+
+	// Setting VolumeClaimTemplate.Resources.Claims should have been
+	// treated as an error by validation when extending
+	// ResourceRequirements in 1.26. Now we can only accept it and drop the
+	// field.
+	for i := range podSpec.Volumes {
+		if podSpec.Volumes[i].Ephemeral != nil && podSpec.Volumes[i].Ephemeral.VolumeClaimTemplate != nil {
+			podSpec.Volumes[i].Ephemeral.VolumeClaimTemplate.Spec.Resources.Claims = nil
+		}
+	}
 }
 
 func dynamicResourceAllocationInUse(podSpec *api.PodSpec) bool {
diff --git a/pkg/api/pod/util_test.go b/pkg/api/pod/util_test.go
index 17ae3fe78ad..5def1ade4d8 100644
--- a/pkg/api/pod/util_test.go
+++ b/pkg/api/pod/util_test.go
@@ -2236,3 +2236,41 @@ func TestValidateTopologySpreadConstraintLabelSelectorOption(t *testing.T) {
 		})
 	}
 }
+
+func TestDropVolumesClaimField(t *testing.T) {
+	pod := &api.Pod{
+		Spec: api.PodSpec{
+			Volumes: []api.Volume{
+				{},
+				{
+					VolumeSource: api.VolumeSource{
+						Ephemeral: &api.EphemeralVolumeSource{},
+					},
+				},
+				{
+					VolumeSource: api.VolumeSource{
+						Ephemeral: &api.EphemeralVolumeSource{
+							VolumeClaimTemplate: &api.PersistentVolumeClaimTemplate{
+								Spec: api.PersistentVolumeClaimSpec{
+									Resources: api.ResourceRequirements{
+										Claims: []api.ResourceClaim{
+											{Name: "dra"},
+										},
+									},
+								},
+							},
+						},
+					},
+				},
+			},
+		},
+	}
+
+	DropDisabledPodFields(pod, nil)
+
+	for i, volume := range pod.Spec.Volumes {
+		if volume.Ephemeral != nil && volume.Ephemeral.VolumeClaimTemplate != nil && volume.Ephemeral.VolumeClaimTemplate.Spec.Resources.Claims != nil {
+			t.Errorf("volume #%d: Resources.Claim should be nil", i)
+		}
+	}
+}
diff --git a/pkg/apis/core/types.go b/pkg/apis/core/types.go
index 45514929eba..7b0ea2fb247 100644
--- a/pkg/apis/core/types.go
+++ b/pkg/apis/core/types.go
@@ -2190,7 +2190,7 @@ type ResourceRequirements struct {
 	// This is an alpha field and requires enabling the
 	// DynamicResourceAllocation feature gate.
 	//
-	// This field is immutable.
+	// This field is immutable. It can only be set for containers.
 	//
 	// +featureGate=DynamicResourceAllocation
 	// +optional
diff --git a/staging/src/k8s.io/api/core/v1/types.go b/staging/src/k8s.io/api/core/v1/types.go
index b03840ce62e..63d92f2e5c1 100644
--- a/staging/src/k8s.io/api/core/v1/types.go
+++ b/staging/src/k8s.io/api/core/v1/types.go
@@ -2319,7 +2319,7 @@ type ResourceRequirements struct {
 	// This is an alpha field and requires enabling the
 	// DynamicResourceAllocation feature gate.
 	//
-	// This field is immutable.
+	// This field is immutable. It can only be set for containers.
 	//
 	// +listType=map
 	// +listMapKey=name