diff --git a/rbf/cfg/os.go b/rbf/cfg/os.go
index 28605af8b..88bb68891 100644
--- a/rbf/cfg/os.go
+++ b/rbf/cfg/os.go
@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build !386
 // +build !386
 
 package cfg
diff --git a/shardwidth/20.go b/shardwidth/20.go
index 5505656dd..f5e6ad968 100644
--- a/shardwidth/20.go
+++ b/shardwidth/20.go
@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build !shardwidth16 && !shardwidth17 && !shardwidth18 && !shardwidth19 && !shardwidth21 && !shardwidth22 && !shardwidth23 && !shardwidth24 && !shardwidth25 && !shardwidth26 && !shardwidth27 && !shardwidth28 && !shardwidth29 && !shardwidth30 && !shardwidth31 && !shardwidth32
 // +build !shardwidth16,!shardwidth17,!shardwidth18,!shardwidth19,!shardwidth21,!shardwidth22,!shardwidth23,!shardwidth24,!shardwidth25,!shardwidth26,!shardwidth27,!shardwidth28,!shardwidth29,!shardwidth30,!shardwidth31,!shardwidth32
 
 package shardwidth
diff --git a/testhook/cleanup1.14.go b/testhook/cleanup1.14.go
index 9ca6024be..a88c91eae 100644
--- a/testhook/cleanup1.14.go
+++ b/testhook/cleanup1.14.go
@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build go1.14
 // +build go1.14
 
 package testhook