diff --git a/go.mod b/go.mod
index 8d260b6..906f214 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.26.0
 
 require (
 	github.com/flashcatcloud/go-flashduty v0.15.18-0.20261015103612-f84d9ddaca1a
-	github.com/mattn/go-runewidth v0.0.30
+	github.com/mattn/go-runewidth v0.0.31
 	github.com/spf13/cobra v1.10.2
 	github.com/spf13/pflag v1.0.10
 	github.com/toon-format/toon-go v0.1.0
diff --git a/go.sum b/go.sum
index c952806..8590db1 100644
--- a/go.sum
+++ b/go.sum
@@ -5,8 +5,8 @@ github.com/flashcatcloud/go-flashduty v0.15.18-0.20261015103612-f84d9ddaca1a h1:
 github.com/flashcatcloud/go-flashduty v0.15.18-0.20261015103612-f84d9ddaca1a/go.mod h1:YpHiTYXR5NXBI/rGRZfUy537XMkhdCkwA8NW1QoRHwk=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
-github.com/mattn/go-runewidth v0.0.30 h1:+KUuiDA4fF0R1p5FeueHefjDm+GIM+kWfFnDjybOPgk=
-github.com/mattn/go-runewidth v0.0.30/go.mod h1:3qAiGCV4Koz/yuveO58qUefmUTRm8r0IGEXZ9jeHp/8=
+github.com/mattn/go-runewidth v0.0.31 h1:1oCV4ReTlosDBc6rYRw5cL8S/4y8iv5oRl4SJ5IBgwo=
+github.com/mattn/go-runewidth v0.0.31/go.mod h1:3qAiGCV4Koz/yuveO58qUefmUTRm8r0IGEXZ9jeHp/8=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/spf13/cobra v1.10.2 h1:DMTTonx5m65Ic0GOoRY2c16WCbHxOOw6xxezuLaBpcU=
 github.com/spf13/cobra v1.10.2/go.mod h1:7C1pvHqHw5A4vrJfjNwvOdzYu0Gml16OCs2GRiTUUS4=