3 files changed, 2 insertions, 7 deletions

diff --git a/example/main.go b/example/main.go
index 9cd0d05..2cfc85c 100644
--- a/example/main.go
+++ b/example/main.go
@@ -15,8 +15,7 @@ import (
 	"os/signal"
 	"strings"
 	"sync"
-
-	"golang.org/x/sys/unix"
+	"syscall"
 
 	"go.awhk.org/gosdd"
 )
@@ -52,7 +51,7 @@ func main() {
 
 func listenAll(fds []*os.File) {
 	sig := make(chan os.Signal, 1)
-	signal.Notify(sig, os.Interrupt, unix.SIGTERM)
+	signal.Notify(sig, os.Interrupt, syscall.SIGTERM)
 
 	srvs := make([]echoServer, 0, len(fds))
 	wg := &sync.WaitGroup{}
diff --git a/go.mod b/go.mod
index ecee8ab..832b735 100644
--- a/go.mod
+++ b/go.mod
@@ -1,5 +1,3 @@
 module go.awhk.org/gosdd
 
 go 1.16
-
-require golang.org/x/sys v0.0.0-20210616094352-59db8d763f22
diff --git a/go.sum b/go.sum
deleted file mode 100644
index 9f05d9d..0000000
--- a/go.sum
+++ /dev/null
@@ -1,2 +0,0 @@
-golang.org/x/sys v0.0.0-20210616094352-59db8d763f22 h1:RqytpXGR1iVNX7psjB3ff8y7sNFinVFvkx1c8SjBkio=
-golang.org/x/sys v0.0.0-20210616094352-59db8d763f22/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=