diff --git a/package-lock.json b/package-lock.json
index c7f10e8..e433aaa 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,7 +11,7 @@
       "devDependencies": {
         "ava": "8.0.1",
         "c8": "11.0.0",
-        "prettier": "3.8.5"
+        "prettier": "3.9.1"
       },
       "engines": {
         "node": ">=18"
@@ -1821,9 +1821,9 @@
       }
     },
     "node_modules/prettier": {
-      "version": "3.8.5",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.8.5.tgz",
-      "integrity": "sha512-zxcTTCedNGJM4R8sj/Cq/F0W/c4iE0afWBcBwMTRtw4WHYP9TWkYjdiH3npPRUYsXQCPR0hTU9yjovOu+E6EQA==",
+      "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 b86a3a4..1bc8dfc 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
   "devDependencies": {
     "ava": "8.0.1",
     "c8": "11.0.0",
-    "prettier": "3.8.5"
+    "prettier": "3.9.1"
   },
   "engines": {
     "node": ">=18"