diff --git a/unix.go b/unix.go
index 58f8fa6..2169c3a 100644
--- a/unix.go
+++ b/unix.go
@@ -1,3 +1,4 @@
+//go:build !windows
 // +build !windows
 
 package gohideparam
diff --git a/win.go b/win.go
index c1c7319..5b8fbe1 100644
--- a/win.go
+++ b/win.go
@@ -1,3 +1,4 @@
+//go:build windows
 // +build windows
 
 package gohideparam