diff --git a/CHANGELOG.md b/CHANGELOG.md
index db21112dce..8e4b4ca6df 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Changed
+
+- Upgraded `prettier` from version `3.9.6` to `3.9.9`
+
 ## 3.76.0 - 2026-09-30
 
 ### Added
diff --git a/package-lock.json b/package-lock.json
index a5dad5f892..44193a3624 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -162,7 +162,7 @@
         "jest-environment-node": "30.3.0",
         "jest-preset-angular": "17.0.0",
         "nx": "23.1.1",
-        "prettier": "3.9.6",
+        "prettier": "3.9.9",
         "prettier-plugin-organize-attributes": "1.0.0",
         "prisma": "7.10.0",
         "react": "18.2.0",
@@ -30600,9 +30600,9 @@
       }
     },
     "node_modules/prettier": {
-      "version": "3.9.6",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.9.6.tgz",
-      "integrity": "sha512-OpN0zzVdiaiAhxpuuj5efpIS4sY9j7bY6uR5mnj5yPzGkdkjNKSJeUThPb60Jw29QuAZgA4o+/iB49kFiaBX6g==",
+      "version": "3.9.9",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.9.9.tgz",
+      "integrity": "sha512-Z/CJHIkdujO/OtN7nXUii0Rf3VT5SRuhjBA82Xvu2XhBUgX3nhP67T0LHceBdQLex7OOFGTox+Q5Yg8Jk2Qivg==",
       "dev": true,
       "license": "MIT",
       "bin": {
diff --git a/package.json b/package.json
index fcb94759f7..1d87566678 100644
--- a/package.json
+++ b/package.json
@@ -206,7 +206,7 @@
     "jest-environment-node": "30.3.0",
     "jest-preset-angular": "17.0.0",
     "nx": "23.1.1",
-    "prettier": "3.9.6",
+    "prettier": "3.9.9",
     "prettier-plugin-organize-attributes": "1.0.0",
     "prisma": "7.10.0",
     "react": "18.2.0",