diff --git a/package-lock.json b/package-lock.json
index 5ad285e..99ca1dd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,14 +9,14 @@
       "version": "1.1.3",
       "license": "MIT",
       "devDependencies": {
-        "prettier": "3.8.4",
+        "prettier": "3.9.1",
         "typescript": "^6.0.3"
       }
     },
     "node_modules/prettier": {
-      "version": "3.8.4",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.8.4.tgz",
-      "integrity": "sha512-N2MylSdi48+5N/6S5j+maeHbUSIzzZ5uOcX5Hm4QpV8Dkb1HFjfAKTKX6yNPJQD9AhcT3ifHNB66tWTTJDi11Q==",
+      "version": "3.9.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.9.1.tgz",
+      "integrity": "sha512-ppiDo2CSwexck1eyZUwJHg/N3nf1+6IRCv7W/VJ5vaLnVCmB7+3CdRfMwoCHBBX6xTrREDTksZ4OZl5SSf4zXA==",
       "dev": true,
       "license": "MIT",
       "bin": {
diff --git a/package.json b/package.json
index b5a5596..c692b0b 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
   },
   "homepage": "https://github.com/swiing/Bit-TypedArray#readme",
   "devDependencies": {
-    "prettier": "3.8.4",
+    "prettier": "3.9.1",
     "typescript": "^6.0.3"
   },
   "files": [