diff --git a/package.json b/package.json
index 9e05db00..63c4060c 100644
--- a/package.json
+++ b/package.json
@@ -110,7 +110,7 @@
         "eslint-plugin-prettier": "^5.5.5",
         "jest": "^29.7.0",
         "jest-websocket-mock": "^2.5.0",
-        "prettier": "^3.5.3",
+        "prettier": "^3.9.9",
         "size-limit": "^11.2.0",
         "ts-interface-builder": "^0.3.3",
         "ts-jest": "^29.4.12",
diff --git a/yarn.lock b/yarn.lock
index 063ceff3..8eb4654f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5577,10 +5577,10 @@ prettier@^2.8.1:
   resolved "https://registry.npmjs.org/prettier/-/prettier-2.8.8.tgz"
   integrity sha512-tdN8qQGvNjw4CHbY+XXk0JgCXn9QiF21a55rBe5LJAU+kDyC4WQn4+awm2Xfk2lQMk5fKup9XgzTZtGkjBdP9Q==
 
-prettier@^3.5.3:
-  version "3.5.3"
-  resolved "https://registry.npmjs.org/prettier/-/prettier-3.5.3.tgz"
-  integrity sha512-QQtaxnoDJeAkDvDKWCLiwIXkTgRhwYDEQCghU9Z6q03iyek/rxRh/2lC3HB7P8sWT2xC/y5JDctPLBIGzHKbhw==
+prettier@^3.9.9:
+  version "3.9.9"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-3.9.9.tgz#09b826918c91cd4cbc80e0cbd1d2a922ff04f233"
+  integrity sha512-Z/CJHIkdujO/OtN7nXUii0Rf3VT5SRuhjBA82Xvu2XhBUgX3nhP67T0LHceBdQLex7OOFGTox+Q5Yg8Jk2Qivg==
 
 pretty-format@^29.0.0, pretty-format@^29.7.0:
   version "29.7.0"