diff --git a/package.json b/package.json
index 2524c82a..ddaf573d 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "husky": "^8.0.3",
     "js-slang": "^1.0.57",
     "lz-string": "^1.5.0",
-    "prettier": "^2.8.8",
+    "prettier": "^3.4.2",
     "xmldom": "^0.6.0",
     "xpath": "0.0.33"
   },
diff --git a/yarn.lock b/yarn.lock
index 921e0eee..68d8e35b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2832,10 +2832,10 @@ prebuild-install@^7.1.1:
     tar-fs "^2.0.0"
     tunnel-agent "^0.6.0"
 
-prettier@^2.8.8:
-  version "2.8.8"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.8.8.tgz#e8c5d7e98a4305ffe3de2e1fc4aca1a71c28b1da"
-  integrity sha512-tdN8qQGvNjw4CHbY+XXk0JgCXn9QiF21a55rBe5LJAU+kDyC4WQn4+awm2Xfk2lQMk5fKup9XgzTZtGkjBdP9Q==
+prettier@^3.4.2:
+  version "3.4.2"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-3.4.2.tgz#a5ce1fb522a588bf2b78ca44c6e6fe5aa5a2b13f"
+  integrity sha512-e9MewbtFo+Fevyuxn/4rrcDAaq0IYxPGLvObpQjiZBMAzB9IGmzlnG9RZy3FFas+eBMu2vA0CszMeduow5dIuQ==
 
 promise-inflight@^1.0.1:
   version "1.0.1"