diff --git a/package.json b/package.json
index 6e96e60..3e7bdbf 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "check-write": "biome check --write"
   },
   "devDependencies": {
-    "@biomejs/biome": "^2.4.4",
+    "@biomejs/biome": "^2.4.14",
     "@textlint-ja/textlint-rule-preset-ai-writing": "^1.6.1",
     "@vivliostyle/cli": "10.3.1",
     "pdf-lib": "^1.17.1",
diff --git a/yarn.lock b/yarn.lock
index 378d4af..5c2b152 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -119,18 +119,18 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@biomejs/biome@npm:^2.4.4":
-  version: 2.4.4
-  resolution: "@biomejs/biome@npm:2.4.4"
-  dependencies:
-    "@biomejs/cli-darwin-arm64": "npm:2.4.4"
-    "@biomejs/cli-darwin-x64": "npm:2.4.4"
-    "@biomejs/cli-linux-arm64": "npm:2.4.4"
-    "@biomejs/cli-linux-arm64-musl": "npm:2.4.4"
-    "@biomejs/cli-linux-x64": "npm:2.4.4"
-    "@biomejs/cli-linux-x64-musl": "npm:2.4.4"
-    "@biomejs/cli-win32-arm64": "npm:2.4.4"
-    "@biomejs/cli-win32-x64": "npm:2.4.4"
+"@biomejs/biome@npm:^2.4.14":
+  version: 2.4.15
+  resolution: "@biomejs/biome@npm:2.4.15"
+  dependencies:
+    "@biomejs/cli-darwin-arm64": "npm:2.4.15"
+    "@biomejs/cli-darwin-x64": "npm:2.4.15"
+    "@biomejs/cli-linux-arm64": "npm:2.4.15"
+    "@biomejs/cli-linux-arm64-musl": "npm:2.4.15"
+    "@biomejs/cli-linux-x64": "npm:2.4.15"
+    "@biomejs/cli-linux-x64-musl": "npm:2.4.15"
+    "@biomejs/cli-win32-arm64": "npm:2.4.15"
+    "@biomejs/cli-win32-x64": "npm:2.4.15"
   dependenciesMeta:
     "@biomejs/cli-darwin-arm64":
       optional: true
@@ -150,62 +150,62 @@ __metadata:
       optional: true
   bin:
     biome: bin/biome
-  checksum: 10c0/f2b7620d39caeeb9e0ed070dd1065cc2378626c7fa6ecda3db84b64df4c94fb4909407726044e28c83e8a95121ad389498cc3f0e5be600a421d906ca705b821c
+  checksum: 10c0/46ac114b97f00e5fe0d22590337c80c7a2467d2aabf57d7f99b92356fd01cf76bb7d972782508e0f51c34e08a1a7f8e9eefec6fe72aa7b5f53b9161b7fe582e2
   languageName: node
   linkType: hard
 
-"@biomejs/cli-darwin-arm64@npm:2.4.4":
-  version: 2.4.4
-  resolution: "@biomejs/cli-darwin-arm64@npm:2.4.4"
+"@biomejs/cli-darwin-arm64@npm:2.4.15":
+  version: 2.4.15
+  resolution: "@biomejs/cli-darwin-arm64@npm:2.4.15"
   conditions: os=darwin & cpu=arm64
   languageName: node
   linkType: hard
 
-"@biomejs/cli-darwin-x64@npm:2.4.4":
-  version: 2.4.4
-  resolution: "@biomejs/cli-darwin-x64@npm:2.4.4"
+"@biomejs/cli-darwin-x64@npm:2.4.15":
+  version: 2.4.15
+  resolution: "@biomejs/cli-darwin-x64@npm:2.4.15"
   conditions: os=darwin & cpu=x64
   languageName: node
   linkType: hard
 
-"@biomejs/cli-linux-arm64-musl@npm:2.4.4":
-  version: 2.4.4
-  resolution: "@biomejs/cli-linux-arm64-musl@npm:2.4.4"
+"@biomejs/cli-linux-arm64-musl@npm:2.4.15":
+  version: 2.4.15
+  resolution: "@biomejs/cli-linux-arm64-musl@npm:2.4.15"
   conditions: os=linux & cpu=arm64 & libc=musl
   languageName: node
   linkType: hard
 
-"@biomejs/cli-linux-arm64@npm:2.4.4":
-  version: 2.4.4
-  resolution: "@biomejs/cli-linux-arm64@npm:2.4.4"
+"@biomejs/cli-linux-arm64@npm:2.4.15":
+  version: 2.4.15
+  resolution: "@biomejs/cli-linux-arm64@npm:2.4.15"
   conditions: os=linux & cpu=arm64 & libc=glibc
   languageName: node
   linkType: hard
 
-"@biomejs/cli-linux-x64-musl@npm:2.4.4":
-  version: 2.4.4
-  resolution: "@biomejs/cli-linux-x64-musl@npm:2.4.4"
+"@biomejs/cli-linux-x64-musl@npm:2.4.15":
+  version: 2.4.15
+  resolution: "@biomejs/cli-linux-x64-musl@npm:2.4.15"
   conditions: os=linux & cpu=x64 & libc=musl
   languageName: node
   linkType: hard
 
-"@biomejs/cli-linux-x64@npm:2.4.4":
-  version: 2.4.4
-  resolution: "@biomejs/cli-linux-x64@npm:2.4.4"
+"@biomejs/cli-linux-x64@npm:2.4.15":
+  version: 2.4.15
+  resolution: "@biomejs/cli-linux-x64@npm:2.4.15"
   conditions: os=linux & cpu=x64 & libc=glibc
   languageName: node
   linkType: hard
 
-"@biomejs/cli-win32-arm64@npm:2.4.4":
-  version: 2.4.4
-  resolution: "@biomejs/cli-win32-arm64@npm:2.4.4"
+"@biomejs/cli-win32-arm64@npm:2.4.15":
+  version: 2.4.15
+  resolution: "@biomejs/cli-win32-arm64@npm:2.4.15"
   conditions: os=win32 & cpu=arm64
   languageName: node
   linkType: hard
 
-"@biomejs/cli-win32-x64@npm:2.4.4":
-  version: 2.4.4
-  resolution: "@biomejs/cli-win32-x64@npm:2.4.4"
+"@biomejs/cli-win32-x64@npm:2.4.15":
+  version: 2.4.15
+  resolution: "@biomejs/cli-win32-x64@npm:2.4.15"
   conditions: os=win32 & cpu=x64
   languageName: node
   linkType: hard
@@ -8651,7 +8651,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "techbook-template@workspace:."
   dependencies:
-    "@biomejs/biome": "npm:^2.4.4"
+    "@biomejs/biome": "npm:^2.4.14"
     "@textlint-ja/textlint-rule-preset-ai-writing": "npm:^1.6.1"
     "@vivliostyle/cli": "npm:10.3.1"
     pdf-lib: "npm:^1.17.1"