diff --git a/backend/backend_notls.go b/backend/backend_notls.go
index 5bdcc8c..8d4239d 100644
--- a/backend/backend_notls.go
+++ b/backend/backend_notls.go
@@ -1,3 +1,4 @@
+//go:build no_namecoin_tls
 // +build no_namecoin_tls
 
 package backend
diff --git a/backend/backend_tls.go b/backend/backend_tls.go
index 77dc974..25d66c8 100644
--- a/backend/backend_tls.go
+++ b/backend/backend_tls.go
@@ -1,3 +1,4 @@
+//go:build !no_namecoin_tls
 // +build !no_namecoin_tls
 
 package backend
diff --git a/ncdomain/convert_notls.go b/ncdomain/convert_notls.go
index 1d69c88..bae914a 100644
--- a/ncdomain/convert_notls.go
+++ b/ncdomain/convert_notls.go
@@ -1,3 +1,4 @@
+//go:build no_namecoin_tls
 // +build no_namecoin_tls
 
 package ncdomain
diff --git a/ncdomain/convert_notls_test.go b/ncdomain/convert_notls_test.go
index 1c4f475..1cdbfa3 100644
--- a/ncdomain/convert_notls_test.go
+++ b/ncdomain/convert_notls_test.go
@@ -1,3 +1,4 @@
+//go:build no_namecoin_tls
 // +build no_namecoin_tls
 
 package ncdomain_test
diff --git a/ncdomain/convert_tls.go b/ncdomain/convert_tls.go
index c48dc49..d054054 100644
--- a/ncdomain/convert_tls.go
+++ b/ncdomain/convert_tls.go
@@ -1,3 +1,4 @@
+//go:build !no_namecoin_tls
 // +build !no_namecoin_tls
 
 package ncdomain
diff --git a/ncdomain/convert_tls_test.go b/ncdomain/convert_tls_test.go
index 691d2a0..a4e9afb 100644
--- a/ncdomain/convert_tls_test.go
+++ b/ncdomain/convert_tls_test.go
@@ -1,3 +1,4 @@
+//go:build !no_namecoin_tls
 // +build !no_namecoin_tls
 
 package ncdomain_test
diff --git a/server/server_notls.go b/server/server_notls.go
index d4f857c..1453cac 100644
--- a/server/server_notls.go
+++ b/server/server_notls.go
@@ -1,3 +1,4 @@
+//go:build no_namecoin_tls
 // +build no_namecoin_tls
 
 package server
diff --git a/server/server_tls.go b/server/server_tls.go
index 94d6f98..efde5a8 100644
--- a/server/server_tls.go
+++ b/server/server_tls.go
@@ -1,3 +1,4 @@
+//go:build !no_namecoin_tls
 // +build !no_namecoin_tls
 
 package server
diff --git a/tlshook/tlshook.go b/tlshook/tlshook.go
index 3922a01..f173c66 100644
--- a/tlshook/tlshook.go
+++ b/tlshook/tlshook.go
@@ -1,3 +1,4 @@
+//go:build !no_namecoin_tls
 // +build !no_namecoin_tls
 
 package tlshook
diff --git a/tlshook/tlshook_notls.go b/tlshook/tlshook_notls.go
index f083441..2fa6503 100644
--- a/tlshook/tlshook_notls.go
+++ b/tlshook/tlshook_notls.go
@@ -1,3 +1,4 @@
+//go:build no_namecoin_tls
 // +build no_namecoin_tls
 
 package tlshook