diff --git a/go.mod b/go.mod
index 19b4052..008504a 100644
--- a/go.mod
+++ b/go.mod
@@ -3,12 +3,12 @@ module github.com/YoshikiShibata/gpl
 go 1.17
 
 require (
-	golang.org/x/crypto v0.6.0
-	golang.org/x/net v0.7.0
+	golang.org/x/crypto v0.14.0
+	golang.org/x/net v0.17.0
 	gopl.io v0.0.0-20200323155855-65c318dde95e
 )
 
 require (
-	golang.org/x/sys v0.5.0 // indirect
-	golang.org/x/term v0.5.0 // indirect
+	golang.org/x/sys v0.13.0 // indirect
+	golang.org/x/term v0.13.0 // indirect
 )