diff --git a/package-lock.json b/package-lock.json
index f009f258..83630944 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,14 +8,15 @@
       "name": "@artichokeruby/ruby-strftime",
       "version": "0.0.0",
       "devDependencies": {
-        "prettier": "^3.4.2"
+        "prettier": "^3.5.3"
       }
     },
     "node_modules/prettier": {
-      "version": "3.4.2",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.4.2.tgz",
-      "integrity": "sha512-e9MewbtFo+Fevyuxn/4rrcDAaq0IYxPGLvObpQjiZBMAzB9IGmzlnG9RZy3FFas+eBMu2vA0CszMeduow5dIuQ==",
+      "version": "3.5.3",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.5.3.tgz",
+      "integrity": "sha512-QQtaxnoDJeAkDvDKWCLiwIXkTgRhwYDEQCghU9Z6q03iyek/rxRh/2lC3HB7P8sWT2xC/y5JDctPLBIGzHKbhw==",
       "dev": true,
+      "license": "MIT",
       "bin": {
         "prettier": "bin/prettier.cjs"
       },
diff --git a/package.json b/package.json
index ad1d9937..ee153691 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
   "homepage": "https://www.artichokeruby.org",
   "bugs": "https://github.com/artichoke/ruby-strftime/issues",
   "devDependencies": {
-    "prettier": "^3.4.2"
+    "prettier": "^3.5.3"
   },
   "scripts": {
     "fmt": "prettier --write \"**/*\""