diff --git a/generate_cert.go b/generate_cert.go
index 1857185..7ea90f8 100644
--- a/generate_cert.go
+++ b/generate_cert.go
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build ignore
 // +build ignore
 
 // Generate a self-signed X.509 certificate for a TLS server. Outputs to
diff --git a/handshake_unix_test.go b/handshake_unix_test.go
index 7271854..19fc698 100644
--- a/handshake_unix_test.go
+++ b/handshake_unix_test.go
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
 // +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
 
 package tls