diff --git a/app-auth/graphapponlytutorial/package-lock.json b/app-auth/graphapponlytutorial/package-lock.json
index ef7f855..f223ed0 100644
--- a/app-auth/graphapponlytutorial/package-lock.json
+++ b/app-auth/graphapponlytutorial/package-lock.json
@@ -19,7 +19,7 @@
         "eslint": "^10.5.0",
         "eslint-config-prettier": "^10.1.8",
         "eslint-plugin-prettier": "^5.5.6",
-        "prettier": "^3.8.4"
+        "prettier": "^3.9.1"
       }
     },
     "node_modules/@azure/abort-controller": {
@@ -1368,9 +1368,9 @@
       }
     },
     "node_modules/prettier": {
-      "version": "3.8.4",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.8.4.tgz",
-      "integrity": "sha512-N2MylSdi48+5N/6S5j+maeHbUSIzzZ5uOcX5Hm4QpV8Dkb1HFjfAKTKX6yNPJQD9AhcT3ifHNB66tWTTJDi11Q==",
+      "version": "3.9.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.9.1.tgz",
+      "integrity": "sha512-ppiDo2CSwexck1eyZUwJHg/N3nf1+6IRCv7W/VJ5vaLnVCmB7+3CdRfMwoCHBBX6xTrREDTksZ4OZl5SSf4zXA==",
       "dev": true,
       "license": "MIT",
       "bin": {
diff --git a/app-auth/graphapponlytutorial/package.json b/app-auth/graphapponlytutorial/package.json
index e6a901f..8cedc14 100644
--- a/app-auth/graphapponlytutorial/package.json
+++ b/app-auth/graphapponlytutorial/package.json
@@ -16,7 +16,7 @@
     "eslint": "^10.5.0",
     "eslint-config-prettier": "^10.1.8",
     "eslint-plugin-prettier": "^5.5.6",
-    "prettier": "^3.8.4"
+    "prettier": "^3.9.1"
   },
   "dependencies": {
     "@azure/identity": "^4.13.1",