diff --git a/src/time/zoneinfo_test.go b/src/time/zoneinfo_test.go
index 136bb7bb8a5..f032aa7924d 100644
--- a/src/time/zoneinfo_test.go
+++ b/src/time/zoneinfo_test.go
@@ -7,6 +7,7 @@ package time_test
 import (
 	"errors"
 	"fmt"
+	"os"
 	"reflect"
 	"testing"
 	"time"