diff --git a/bun.lock b/bun.lock
index f106d5a..e6480ff 100644
--- a/bun.lock
+++ b/bun.lock
@@ -16,7 +16,7 @@
         "@biomejs/biome": "2.3.11",
         "@commitlint/cli": "20.4.0",
         "@commitlint/config-conventional": "20.4.0",
-        "@mkobayashime/shared-config": "3.0.0",
+        "@mkobayashime/shared-config": "4.0.0",
         "@types/glob": "9.0.0",
         "@types/node": "25.0.9",
         "depcheck": "1.4.7",
@@ -198,7 +198,7 @@
 
     "@jridgewell/trace-mapping": ["@jridgewell/trace-mapping@0.3.25", "", { "dependencies": { "@jridgewell/resolve-uri": "^3.1.0", "@jridgewell/sourcemap-codec": "^1.4.14" } }, "sha512-vNk6aEwybGtawWmy/PzwnGDOjCkLWSD2wqvjGGAgOAwCGWySYXfYoxt00IJkTF+8Lb57DwOb3Aa0o9CApepiYQ=="],
 
-    "@mkobayashime/shared-config": ["@mkobayashime/shared-config@3.0.0", "", { "peerDependencies": { "@biomejs/biome": "^2.0.4", "eslint": "^9.31.0", "eslint-config-flat-gitignore": "^2.1.0", "typescript": "^5.8.3", "typescript-eslint": "^8.39.0" } }, "sha512-/wJWswLezPKDBWcn8FWSsVLuaTgBac69D7KsfC1snNxHjL7l7bf14To54tNmXw46RzY7G+GgHVJyKDVnR0gKHg=="],
+    "@mkobayashime/shared-config": ["@mkobayashime/shared-config@4.0.0", "", { "optionalDependencies": { "@biomejs/biome": ">2.3.0", "eslint": "^9.31.0", "eslint-config-flat-gitignore": "^2.1.0", "typescript": "^5.8.3", "typescript-eslint": "^8.39.0" } }, "sha512-yLcjSwsHmBQT5NngXSByTF1sn0qxSsyWRqFoOthhzWwvaWZWXi7vMNKVKW4JVn1WElh1AZuXL0WPHryNM6OvrA=="],
 
     "@pkgjs/parseargs": ["@pkgjs/parseargs@0.11.0", "", {}, "sha512-+1VkjdD0QBLPodGrJUeqarH8VAIvQODIbwh9XpP5Syisf7YoQgsJKPNFoqqLQlu+VQ/tVSshMR6loPMn8U+dPg=="],
 
diff --git a/package.json b/package.json
index ac4b862..25fffa6 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
 		"@biomejs/biome": "2.3.11",
 		"@commitlint/cli": "20.4.0",
 		"@commitlint/config-conventional": "20.4.0",
-		"@mkobayashime/shared-config": "3.0.0",
+		"@mkobayashime/shared-config": "4.0.0",
 		"@types/glob": "9.0.0",
 		"@types/node": "25.0.9",
 		"depcheck": "1.4.7",