diff --git a/utxonursery_test.go b/utxonursery_test.go
index adff6d3e..5410a55f 100644
--- a/utxonursery_test.go
+++ b/utxonursery_test.go
@@ -336,6 +336,8 @@ func init() {
 }
 
 func TestKidOutputSerialization(t *testing.T) {
+	t.Parallel()
+
 	for i, kid := range kidOutputs {
 		var b bytes.Buffer
 		if err := kid.Encode(&b); err != nil {
@@ -358,6 +360,8 @@ func TestKidOutputSerialization(t *testing.T) {
 }
 
 func TestBabyOutputSerialization(t *testing.T) {
+	t.Parallel()
+
 	for i, baby := range babyOutputs {
 		var b bytes.Buffer
 		if err := baby.Encode(&b); err != nil {