diff --git a/lib/webProxyHandler.ts b/lib/webProxyHandler.ts
index b4967566..2c17893b 100644
--- a/lib/webProxyHandler.ts
+++ b/lib/webProxyHandler.ts
@@ -38,7 +38,7 @@ export function createWebProxyHandler(
     callback?: WebErrorCallback,
   ) {
     const requestOptions =
-      typeof optionsOrCallback === 'function' ? {} : optionsOrCallback ?? {};
+      typeof optionsOrCallback === 'function' ? {} : (optionsOrCallback ?? {});
     const errorCallback =
       typeof optionsOrCallback === 'function' ? optionsOrCallback : callback;
 
diff --git a/lib/websocketProxyHandler.ts b/lib/websocketProxyHandler.ts
index b51dc94f..b9cfdd33 100644
--- a/lib/websocketProxyHandler.ts
+++ b/lib/websocketProxyHandler.ts
@@ -42,7 +42,7 @@ export function createWebSocketProxyHandler(
     callback?: WebSocketErrorCallback,
   ) {
     const requestOptions =
-      typeof optionsOrCallback === 'function' ? {} : optionsOrCallback ?? {};
+      typeof optionsOrCallback === 'function' ? {} : (optionsOrCallback ?? {});
     const errorCallback =
       typeof optionsOrCallback === 'function' ? optionsOrCallback : callback;
 
diff --git a/package-lock.json b/package-lock.json
index a0d7e48c..59980891 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -24,7 +24,7 @@
         "concat-stream": "^2.0.0",
         "eslint": "^8.21.0",
         "eslint-config-prettier": "^9.1.0",
-        "prettier": "^2.7.1",
+        "prettier": "^3.3.3",
         "semver": "^7.0.0",
         "socket.io": "^4.0.0",
         "socket.io-client": "^4.0.0",
@@ -3314,15 +3314,15 @@
       }
     },
     "node_modules/prettier": {
-      "version": "2.8.8",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.8.8.tgz",
-      "integrity": "sha512-tdN8qQGvNjw4CHbY+XXk0JgCXn9QiF21a55rBe5LJAU+kDyC4WQn4+awm2Xfk2lQMk5fKup9XgzTZtGkjBdP9Q==",
+      "version": "3.3.3",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.3.3.tgz",
+      "integrity": "sha512-i2tDNA0O5IrMO757lfrdQZCc2jPNDVntV0m/+4whiDfWaTKfMNgR7Qz0NAeGz/nRqF4m5/6CLzbP4/liHt12Ew==",
       "dev": true,
       "bin": {
-        "prettier": "bin-prettier.js"
+        "prettier": "bin/prettier.cjs"
       },
       "engines": {
-        "node": ">=10.13.0"
+        "node": ">=14"
       },
       "funding": {
         "url": "https://github.com/prettier/prettier?sponsor=1"
diff --git a/package.json b/package.json
index efeb9bfa..044bb15b 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,7 @@
     "concat-stream": "^2.0.0",
     "eslint": "^8.21.0",
     "eslint-config-prettier": "^9.1.0",
-    "prettier": "^2.7.1",
+    "prettier": "^3.3.3",
     "semver": "^7.0.0",
     "socket.io": "^4.0.0",
     "socket.io-client": "^4.0.0",