diff --git a/package.json b/package.json
index 08e6a50b..35586c0f 100644
--- a/package.json
+++ b/package.json
@@ -61,7 +61,7 @@
     "eslint-config-prettier": "10.1.8",
     "eslint-plugin-tsdoc": "0.5.3",
     "mocksse": "1.0.4",
-    "prettier": "3.9.8",
+    "prettier": "3.9.9",
     "ts-node": "10.9.2",
     "ts-node-dev": "2.0.0",
     "typedoc": "0.28.20",
diff --git a/yarn.lock b/yarn.lock
index 5d061eea..f75ae4ed 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2964,10 +2964,10 @@ prelude-ls@^1.2.1:
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.2.1.tgz"
   integrity sha512-vkcDPrRZo1QZLbn5RLGPpg/WmIQ65qoWWhcGKf/b5eplkkarX0m9z8ppCat4mlOqUsWpyNuYgO3VRyrYHSzX5g==
 
-prettier@3.9.8:
-  version "3.9.8"
-  resolved "https://registry.npmjs.org/prettier/-/prettier-3.9.8.tgz#54e81128584538c81d85fce9d5fd77a410c385c5"
-  integrity sha512-WRFq3Wn3WId7LLROfMLdH7xaFr2jR62wU8nLO6rQUOLOxNZUviyJQs1M0iIhLexSFy+L+w0ch66wtoO2jRjG0A==
+prettier@3.9.9:
+  version "3.9.9"
+  resolved "https://registry.npmjs.org/prettier/-/prettier-3.9.9.tgz#09b826918c91cd4cbc80e0cbd1d2a922ff04f233"
+  integrity sha512-Z/CJHIkdujO/OtN7nXUii0Rf3VT5SRuhjBA82Xvu2XhBUgX3nhP67T0LHceBdQLex7OOFGTox+Q5Yg8Jk2Qivg==
 
 pretty-ms@^9.2.0, pretty-ms@^9.3.0:
   version "9.3.0"