diff --git a/windows/env_windows_test.go b/windows/env_windows_test.go
index 6824e6ed6..db1860e78 100644
--- a/windows/env_windows_test.go
+++ b/windows/env_windows_test.go
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build go1.21
+
 package windows_test
 
 import (