diff --git a/backend/package-lock.json b/backend/package-lock.json
index 9a41b9f..e2a1f72 100644
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -21,7 +21,7 @@
         "express-rate-limit": "^7.5.0",
         "jsonwebtoken": "^9.0.2",
         "morgan": "^1.10.0",
-        "multer": "^1.4.5-lts.1",
+        "multer": "^2.0.2",
         "papaparse": "^5.5.2",
         "sqlite3": "^5.1.7",
         "zod": "^3.24.2"
@@ -2160,48 +2160,32 @@
       "license": "MIT"
     },
     "node_modules/concat-stream": {
-      "version": "1.6.2",
-      "resolved": "https://registry.npmjs.org/concat-stream/-/concat-stream-1.6.2.tgz",
-      "integrity": "sha512-27HBghJxjiZtIk3Ycvn/4kbJk/1uZuJFfuPEns6LaEvpvG1f0hTea8lilrouyo9mVc2GWdcEZ8OLoGmSADlrCw==",
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/concat-stream/-/concat-stream-2.0.0.tgz",
+      "integrity": "sha512-MWufYdFw53ccGjCA+Ol7XJYpAlW6/prSMzuPOTRnJGcGzuhLn4Scrz7qf6o8bROZ514ltazcIFJZevcfbo0x7A==",
       "engines": [
-        "node >= 0.8"
+        "node >= 6.0"
       ],
       "license": "MIT",
       "dependencies": {
         "buffer-from": "^1.0.0",
         "inherits": "^2.0.3",
-        "readable-stream": "^2.2.2",
+        "readable-stream": "^3.0.2",
         "typedarray": "^0.0.6"
       }
     },
     "node_modules/concat-stream/node_modules/readable-stream": {
-      "version": "2.3.8",
-      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.8.tgz",
-      "integrity": "sha512-8p0AUk4XODgIewSi0l8Epjs+EVnWiK7NoDIEGU0HhE7+ZyY8D1IMY7odu5lRrFXGg71L15KG8QrPmum45RTtdA==",
-      "license": "MIT",
-      "dependencies": {
-        "core-util-is": "~1.0.0",
-        "inherits": "~2.0.3",
-        "isarray": "~1.0.0",
-        "process-nextick-args": "~2.0.0",
-        "safe-buffer": "~5.1.1",
-        "string_decoder": "~1.1.1",
-        "util-deprecate": "~1.0.1"
-      }
-    },
-    "node_modules/concat-stream/node_modules/safe-buffer": {
-      "version": "5.1.2",
-      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
-      "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==",
-      "license": "MIT"
-    },
-    "node_modules/concat-stream/node_modules/string_decoder": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
-      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+      "version": "3.6.2",
+      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.2.tgz",
+      "integrity": "sha512-9u/sniCrY3D5WdsERHzHE4G2YCXqoG5FTHUiCC4SIbr6XcLZBY05ya9EKjYek9O5xOAwjGq+1JdGBAS7Q9ScoA==",
       "license": "MIT",
       "dependencies": {
-        "safe-buffer": "~5.1.0"
+        "inherits": "^2.0.3",
+        "string_decoder": "^1.1.1",
+        "util-deprecate": "^1.0.1"
+      },
+      "engines": {
+        "node": ">= 6"
       }
     },
     "node_modules/console-control-strings": {
@@ -4416,21 +4400,21 @@
       "license": "MIT"
     },
     "node_modules/multer": {
-      "version": "1.4.5-lts.2",
-      "resolved": "https://registry.npmjs.org/multer/-/multer-1.4.5-lts.2.tgz",
-      "integrity": "sha512-VzGiVigcG9zUAoCNU+xShztrlr1auZOlurXynNvO9GiWD1/mTBbUljOKY+qMeazBqXgRnjzeEgJI/wyjJUHg9A==",
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/multer/-/multer-2.0.2.tgz",
+      "integrity": "sha512-u7f2xaZ/UG8oLXHvtF/oWTRvT44p9ecwBBqTwgJVq0+4BW1g8OW01TyMEGWBHbyMOYVHXslaut7qEQ1meATXgw==",
       "license": "MIT",
       "dependencies": {
         "append-field": "^1.0.0",
-        "busboy": "^1.0.0",
-        "concat-stream": "^1.5.2",
-        "mkdirp": "^0.5.4",
+        "busboy": "^1.6.0",
+        "concat-stream": "^2.0.0",
+        "mkdirp": "^0.5.6",
         "object-assign": "^4.1.1",
-        "type-is": "^1.6.4",
-        "xtend": "^4.0.0"
+        "type-is": "^1.6.18",
+        "xtend": "^4.0.2"
       },
       "engines": {
-        "node": ">= 6.0.0"
+        "node": ">= 10.16.0"
       }
     },
     "node_modules/napi-build-utils": {
diff --git a/backend/package.json b/backend/package.json
index a28494b..4f374cc 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -27,7 +27,7 @@
     "express-rate-limit": "^7.5.0",
     "jsonwebtoken": "^9.0.2",
     "morgan": "^1.10.0",
-    "multer": "^1.4.5-lts.1",
+    "multer": "^2.0.2",
     "papaparse": "^5.5.2",
     "sqlite3": "^5.1.7",
     "zod": "^3.24.2"