diff --git a/go.mod b/go.mod
index 7a28ae0..1a9fd86 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ toolchain go1.23.0
 
 require (
 	github.com/Songmu/prompter v0.5.1
-	github.com/alecthomas/kong v1.3.0
+	github.com/alecthomas/kong v1.4.0
 	github.com/aws/aws-lambda-go v1.47.0
 	github.com/aws/aws-sdk-go-v2 v1.32.3
 	github.com/aws/aws-sdk-go-v2/config v1.28.1
diff --git a/go.sum b/go.sum
index 8be0383..f14fd26 100644
--- a/go.sum
+++ b/go.sum
@@ -2,8 +2,8 @@ github.com/Songmu/prompter v0.5.1 h1:IAsttKsOZWSDw7bV1mtGn9TAmLFAjXbp9I/eYmUUogo
 github.com/Songmu/prompter v0.5.1/go.mod h1:CS3jEPD6h9IaLaG6afrl1orTgII9+uDWuw95dr6xHSw=
 github.com/alecthomas/assert/v2 v2.11.0 h1:2Q9r3ki8+JYXvGsDyBXwH3LcJ+WK5D0gc5E8vS6K3D0=
 github.com/alecthomas/assert/v2 v2.11.0/go.mod h1:Bze95FyfUr7x34QZrjL+XP+0qgp/zg8yS+TtBj1WA3k=
-github.com/alecthomas/kong v1.3.0 h1:YJKuU6/TV2XOBtymafSeuzDvLAFR8cYMZiXVNLhAO6g=
-github.com/alecthomas/kong v1.3.0/go.mod h1:IDc8HyiouDdpdiEiY81iaEJM8rSIW6LzX8On4FCO0bE=
+github.com/alecthomas/kong v1.4.0 h1:UL7tzGMnnY0YRMMvJyITIRX1EpO6RbBRZDNcCevy3HA=
+github.com/alecthomas/kong v1.4.0/go.mod h1:p2vqieVMeTAnaC83txKtXe8FLke2X07aruPWXyMPQrU=
 github.com/alecthomas/repr v0.4.0 h1:GhI2A8MACjfegCPVq9f1FLvIBS+DrQ2KQBFZP1iFzXc=
 github.com/alecthomas/repr v0.4.0/go.mod h1:Fr0507jx4eOXV7AlPV6AVZLYrLIuIeSOWtW57eE/O/4=
 github.com/aws/aws-lambda-go v1.47.0 h1:0H8s0vumYx/YKs4sE7YM0ktwL2eWse+kfopsRI1sXVI=