diff --git a/go.mod b/go.mod
index 5af485f..8454834 100644
--- a/go.mod
+++ b/go.mod
@@ -6,5 +6,5 @@ toolchain go1.27.2
 
 require (
 	github.com/k1LoW/errors v1.2.1
-	golang.org/x/sys v0.48.0
+	golang.org/x/sys v0.49.0
 )
diff --git a/go.sum b/go.sum
index b054a85..6fbaa6c 100644
--- a/go.sum
+++ b/go.sum
@@ -1,4 +1,4 @@
 github.com/k1LoW/errors v1.2.1 h1:xHfjFaFn+htIdq3NemkiGtVo5Voi3oplgL8Djg6giYs=
 github.com/k1LoW/errors v1.2.1/go.mod h1:FnyqU5omnd/+J2ViEsDaIZXTZGuRMZ5uDpLEqrEsMp4=
-golang.org/x/sys v0.48.0 h1:bbX/i/6MgT9BVLM9RT1thmxL04yeTAhbEz4SyadbXoo=
-golang.org/x/sys v0.48.0/go.mod h1:hNLxWAXmnKAxqDtdwIYC4bM9oQPEecfsnNMuSxOs3og=
+golang.org/x/sys v0.49.0 h1:XbzkgYJHdqh/8m2Uu0W/dQv8nktxx4BFHp1M0gROTXA=
+golang.org/x/sys v0.49.0/go.mod h1:hNLxWAXmnKAxqDtdwIYC4bM9oQPEecfsnNMuSxOs3og=
diff --git a/templates/go.mod b/templates/go.mod
index 414c276..a07faf3 100644
--- a/templates/go.mod
+++ b/templates/go.mod
@@ -6,5 +6,5 @@ toolchain go1.27.2
 
 require (
 	github.com/k1LoW/errors v1.2.1
-	golang.org/x/sys v0.48.0
+	golang.org/x/sys v0.49.0
 )
diff --git a/templates/go.sum b/templates/go.sum
index b054a85..6fbaa6c 100644
--- a/templates/go.sum
+++ b/templates/go.sum
@@ -1,4 +1,4 @@
 github.com/k1LoW/errors v1.2.1 h1:xHfjFaFn+htIdq3NemkiGtVo5Voi3oplgL8Djg6giYs=
 github.com/k1LoW/errors v1.2.1/go.mod h1:FnyqU5omnd/+J2ViEsDaIZXTZGuRMZ5uDpLEqrEsMp4=
-golang.org/x/sys v0.48.0 h1:bbX/i/6MgT9BVLM9RT1thmxL04yeTAhbEz4SyadbXoo=
-golang.org/x/sys v0.48.0/go.mod h1:hNLxWAXmnKAxqDtdwIYC4bM9oQPEecfsnNMuSxOs3og=
+golang.org/x/sys v0.49.0 h1:XbzkgYJHdqh/8m2Uu0W/dQv8nktxx4BFHp1M0gROTXA=
+golang.org/x/sys v0.49.0/go.mod h1:hNLxWAXmnKAxqDtdwIYC4bM9oQPEecfsnNMuSxOs3og=