diff --git a/pkg/chains/signing.go b/pkg/chains/signing.go
index 6a28b5e349..17f6b09b72 100644
--- a/pkg/chains/signing.go
+++ b/pkg/chains/signing.go
@@ -28,6 +28,7 @@ import (
 	"github.com/tektoncd/chains/pkg/chains/signing/x509"
 	"github.com/tektoncd/chains/pkg/chains/storage"
 	"github.com/tektoncd/chains/pkg/config"
+	"github.com/tektoncd/pipeline/pkg/apis/pipeline/v1beta1"
 	versioned "github.com/tektoncd/pipeline/pkg/client/clientset/versioned"
 	"k8s.io/apimachinery/pkg/util/sets"
 	"knative.dev/pkg/logging"
@@ -134,10 +135,10 @@ func (o *ObjectSigner) Sign(ctx context.Context, tektonObj objects.TektonObject)
 
 		// Extract all the "things" to be signed.
 		// We might have a few of each type (several binaries, or images)
-		objects := signableType.ExtractObjects(ctx, tektonObj)
+		objs := signableType.ExtractObjects(ctx, tektonObj)
 
 		// Go through each object one at a time.
-		for _, obj := range objects {
+		for _, obj := range objs {
 
 			payload, err := payloader.CreatePayload(ctx, obj)
 			if err != nil {
@@ -178,6 +179,33 @@ func (o *ObjectSigner) Sign(ctx context.Context, tektonObj objects.TektonObject)
 
 			// Now store those!
 			for _, backend := range sets.List[string](signableType.StorageBackend(cfg)) {
+				// TODO(https://github.com/tektoncd/chains/issues/1026) add support for passing v1 object (vs converted v1beta1) for v2alpha3+
+				
+				// convert types to v1beta1 as needed for backwards compatibility
+				var storageObj objects.TektonObject
+				switch v := obj.(type) {
+				case *objects.TaskRunObjectV1:
+					trV1Beta1 := &v1beta1.TaskRun{} //nolint:staticcheck
+					if err := trV1Beta1.ConvertFrom(ctx, v); err != nil {
+						return fmt.Errorf("error converting Tekton TaskRun from version v1 to v1beta1: %s", err)
+					}
+					storageObj = objects.NewTaskRunObjectV1Beta1(trV1Beta1)
+				case *objects.PipelineRunObjectV1:
+					prV1Beta1 := &v1beta1.PipelineRun{} //nolint:staticcheck
+					if err := prV1Beta1.ConvertFrom(ctx, v); err != nil {
+						return fmt.Errorf("error converting Tekton PipelineRun from version v1 to v1beta1: %s", err)
+					}
+					proV1Beta1 := objects.NewPipelineRunObjectV1Beta1(prV1Beta1)
+					trs := pro.GetTaskRuns()
+					for _, tr := range trs {
+						trV1Beta1 := &v1beta1.TaskRun{} //nolint:staticcheck
+						if err := trV1Beta1.ConvertFrom(ctx, tr); err != nil {
+							return fmt.Errorf("error converting Tekton TaskRun from version v1 to v1beta1: %s", err)
+						}
+						proV1Beta1.AppendTaskRun(trV1Beta1)
+					}
+					storageObj = proV1Beta1
+
 				b := o.Backends[backend]
 				storageOpts := config.StorageOpts{
 					ShortKey:      signableType.ShortKey(obj),
@@ -186,7 +214,7 @@ func (o *ObjectSigner) Sign(ctx context.Context, tektonObj objects.TektonObject)
 					Chain:         signer.Chain(),
 					PayloadFormat: payloadFormat,
 				}
-				if err := b.StorePayload(ctx, tektonObj, rawPayload, string(signature), storageOpts); err != nil {
+				if err := b.StorePayload(ctx, storageObj, rawPayload, string(signature), storageOpts); err != nil {
 					logger.Error(err)
 					merr = multierror.Append(merr, err)
 				}