diff --git a/python/web/package-lock.json b/python/web/package-lock.json
index 2efaf85151..ceb49ab7ba 100644
--- a/python/web/package-lock.json
+++ b/python/web/package-lock.json
@@ -5,7 +5,7 @@
   "packages": {
     "": {
       "devDependencies": {
-        "prettier": "3.8.1",
+        "prettier": "3.9.4",
         "stylelint": "^16.26.1",
         "stylelint-config-standard": "^39.0.1"
       }
@@ -1126,9 +1126,9 @@
       "dev": true
     },
     "node_modules/prettier": {
-      "version": "3.8.1",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.8.1.tgz",
-      "integrity": "sha512-UOnG6LftzbdaHZcKoPFtOcCKztrQ57WkHDeRD9t/PTQtmT0NHSeWWepj6pS0z/N7+08BHFDQVUrfmfMRcZwbMg==",
+      "version": "3.9.4",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.9.4.tgz",
+      "integrity": "sha512-yWG/o/4oJfo036EKAfK6ACAoDOfHeRHx4tuxkfBZiauURiaSmYwlpOr5LQqKtIkRD2z1PLteme2WoxEnj4tHTg==",
       "dev": true,
       "license": "MIT",
       "bin": {
diff --git a/python/web/package.json b/python/web/package.json
index 142998612e..5af7030bf6 100644
--- a/python/web/package.json
+++ b/python/web/package.json
@@ -1,6 +1,6 @@
 {
   "devDependencies": {
-    "prettier": "3.8.1",
+    "prettier": "3.9.4",
     "stylelint": "^16.26.1",
     "stylelint-config-standard": "^39.0.1"
   }