diff --git a/url/parser_test.go b/url/parser_test.go
index 26a631a..054fa8f 100644
--- a/url/parser_test.go
+++ b/url/parser_test.go
@@ -24,6 +24,7 @@ import (
 	"strconv"
 	"strings"
 	"testing"
+	"time"
 )
 
 func TestParse(t *testing.T) {
@@ -179,6 +180,7 @@ func BenchmarkIssue6(b *testing.B) {
 	for i := 10; i <= 20; i++ {
 		n := 1 << i
 		b.Run(fmt.Sprint(n), func(b *testing.B) {
+			time.Sleep(30 * time.Second)
 			var buf strings.Builder
 			buf.Grow(n + 32)
 			buf.WriteString("data:text/javascript,")