diff --git a/package.json b/package.json
index 7a9af32..af4a65f 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "check-write": "biome check --write"
   },
   "devDependencies": {
-    "@biomejs/biome": "2.3.11",
+    "@biomejs/biome": "2.4.2",
     "@textlint-ja/textlint-rule-preset-ai-writing": "^1.6.1",
     "@vivliostyle/cli": "10.3.0",
     "npm-run-all2": "^8.0.4",
diff --git a/yarn.lock b/yarn.lock
index 1f2fe6c..2d283b1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -119,18 +119,18 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@biomejs/biome@npm:2.3.11":
-  version: 2.3.11
-  resolution: "@biomejs/biome@npm:2.3.11"
-  dependencies:
-    "@biomejs/cli-darwin-arm64": "npm:2.3.11"
-    "@biomejs/cli-darwin-x64": "npm:2.3.11"
-    "@biomejs/cli-linux-arm64": "npm:2.3.11"
-    "@biomejs/cli-linux-arm64-musl": "npm:2.3.11"
-    "@biomejs/cli-linux-x64": "npm:2.3.11"
-    "@biomejs/cli-linux-x64-musl": "npm:2.3.11"
-    "@biomejs/cli-win32-arm64": "npm:2.3.11"
-    "@biomejs/cli-win32-x64": "npm:2.3.11"
+"@biomejs/biome@npm:2.4.2":
+  version: 2.4.2
+  resolution: "@biomejs/biome@npm:2.4.2"
+  dependencies:
+    "@biomejs/cli-darwin-arm64": "npm:2.4.2"
+    "@biomejs/cli-darwin-x64": "npm:2.4.2"
+    "@biomejs/cli-linux-arm64": "npm:2.4.2"
+    "@biomejs/cli-linux-arm64-musl": "npm:2.4.2"
+    "@biomejs/cli-linux-x64": "npm:2.4.2"
+    "@biomejs/cli-linux-x64-musl": "npm:2.4.2"
+    "@biomejs/cli-win32-arm64": "npm:2.4.2"
+    "@biomejs/cli-win32-x64": "npm:2.4.2"
   dependenciesMeta:
     "@biomejs/cli-darwin-arm64":
       optional: true
@@ -150,62 +150,62 @@ __metadata:
       optional: true
   bin:
     biome: bin/biome
-  checksum: 10c0/b9764070c3d1583466a8861d37dc480c18103f7bb52115db0f265a38e6343d69792c9beea094e0b3db0905cb365b9a82ad2a0f3f05b7f04873a8f9b444263140
+  checksum: 10c0/1386dfd94642350c82594a6aac2ffdc041a37c5f58fcba5d5055ed952372f3d38e87f29cd4a946114f4af8a29d4c8d007887993b440fbb81460ec12f0a5b841f
   languageName: node
   linkType: hard
 
-"@biomejs/cli-darwin-arm64@npm:2.3.11":
-  version: 2.3.11
-  resolution: "@biomejs/cli-darwin-arm64@npm:2.3.11"
+"@biomejs/cli-darwin-arm64@npm:2.4.2":
+  version: 2.4.2
+  resolution: "@biomejs/cli-darwin-arm64@npm:2.4.2"
   conditions: os=darwin & cpu=arm64
   languageName: node
   linkType: hard
 
-"@biomejs/cli-darwin-x64@npm:2.3.11":
-  version: 2.3.11
-  resolution: "@biomejs/cli-darwin-x64@npm:2.3.11"
+"@biomejs/cli-darwin-x64@npm:2.4.2":
+  version: 2.4.2
+  resolution: "@biomejs/cli-darwin-x64@npm:2.4.2"
   conditions: os=darwin & cpu=x64
   languageName: node
   linkType: hard
 
-"@biomejs/cli-linux-arm64-musl@npm:2.3.11":
-  version: 2.3.11
-  resolution: "@biomejs/cli-linux-arm64-musl@npm:2.3.11"
+"@biomejs/cli-linux-arm64-musl@npm:2.4.2":
+  version: 2.4.2
+  resolution: "@biomejs/cli-linux-arm64-musl@npm:2.4.2"
   conditions: os=linux & cpu=arm64 & libc=musl
   languageName: node
   linkType: hard
 
-"@biomejs/cli-linux-arm64@npm:2.3.11":
-  version: 2.3.11
-  resolution: "@biomejs/cli-linux-arm64@npm:2.3.11"
+"@biomejs/cli-linux-arm64@npm:2.4.2":
+  version: 2.4.2
+  resolution: "@biomejs/cli-linux-arm64@npm:2.4.2"
   conditions: os=linux & cpu=arm64 & libc=glibc
   languageName: node
   linkType: hard
 
-"@biomejs/cli-linux-x64-musl@npm:2.3.11":
-  version: 2.3.11
-  resolution: "@biomejs/cli-linux-x64-musl@npm:2.3.11"
+"@biomejs/cli-linux-x64-musl@npm:2.4.2":
+  version: 2.4.2
+  resolution: "@biomejs/cli-linux-x64-musl@npm:2.4.2"
   conditions: os=linux & cpu=x64 & libc=musl
   languageName: node
   linkType: hard
 
-"@biomejs/cli-linux-x64@npm:2.3.11":
-  version: 2.3.11
-  resolution: "@biomejs/cli-linux-x64@npm:2.3.11"
+"@biomejs/cli-linux-x64@npm:2.4.2":
+  version: 2.4.2
+  resolution: "@biomejs/cli-linux-x64@npm:2.4.2"
   conditions: os=linux & cpu=x64 & libc=glibc
   languageName: node
   linkType: hard
 
-"@biomejs/cli-win32-arm64@npm:2.3.11":
-  version: 2.3.11
-  resolution: "@biomejs/cli-win32-arm64@npm:2.3.11"
+"@biomejs/cli-win32-arm64@npm:2.4.2":
+  version: 2.4.2
+  resolution: "@biomejs/cli-win32-arm64@npm:2.4.2"
   conditions: os=win32 & cpu=arm64
   languageName: node
   linkType: hard
 
-"@biomejs/cli-win32-x64@npm:2.3.11":
-  version: 2.3.11
-  resolution: "@biomejs/cli-win32-x64@npm:2.3.11"
+"@biomejs/cli-win32-x64@npm:2.4.2":
+  version: 2.4.2
+  resolution: "@biomejs/cli-win32-x64@npm:2.4.2"
   conditions: os=win32 & cpu=x64
   languageName: node
   linkType: hard
@@ -2910,7 +2910,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "daigirin-template@workspace:."
   dependencies:
-    "@biomejs/biome": "npm:2.3.11"
+    "@biomejs/biome": "npm:2.4.2"
     "@textlint-ja/textlint-rule-preset-ai-writing": "npm:^1.6.1"
     "@vivliostyle/cli": "npm:10.3.0"
     npm-run-all2: "npm:^8.0.4"