diff --git a/registry/storage/driver/gcs/gcs.go b/registry/storage/driver/gcs/gcs.go
index 161fdf84..f2b6f49a 100644
--- a/registry/storage/driver/gcs/gcs.go
+++ b/registry/storage/driver/gcs/gcs.go
@@ -372,7 +372,7 @@ type writer struct {
 }
 
 // Cancel removes any written content from this FileWriter.
-func (w *writer) Cancel() error {
+func (w *writer) Cancel(ctx context.Context) error {
 	w.closed = true
 	err := storageDeleteObject(cloud.NewContext(dummyProjectID, w.client), w.bucket, w.name)
 	if err != nil {
diff --git a/registry/storage/driver/oss/oss.go b/registry/storage/driver/oss/oss.go
index 0c5f76f0..6d42af95 100644
--- a/registry/storage/driver/oss/oss.go
+++ b/registry/storage/driver/oss/oss.go
@@ -657,7 +657,7 @@ func (w *writer) Close() error {
 	return w.flushPart()
 }
 
-func (w *writer) Cancel() error {
+func (w *writer) Cancel(ctx context.Context) error {
 	if w.closed {
 		return fmt.Errorf("already closed")
 	} else if w.committed {