diff --git a/package-lock.json b/package-lock.json
index 5b6ab6b..9f5d85c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4933,9 +4933,9 @@
       }
     },
     "node_modules/zod": {
-      "version": "3.25.76",
-      "resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
-      "integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==",
+      "version": "4.3.6",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-4.3.6.tgz",
+      "integrity": "sha512-rftlrkhHZOcjDwkGlnUtZZkvaPHCsDATp4pGpuOOMDaTdDDXF91wuVDJoWoPsKX/3YPQ5fHuF3STjcYyKr+Qhg==",
       "license": "MIT",
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
@@ -4956,7 +4956,7 @@
         "pdfjs-dist": "^5.5.207",
         "pdfkit": "^0.17.1",
         "pg": "^8.20.0",
-        "zod": "^3.24.2"
+        "zod": "^4.3.6"
       }
     },
     "server/node_modules/debug": {
diff --git a/server/package.json b/server/package.json
index 1a55620..fd82dec 100644
--- a/server/package.json
+++ b/server/package.json
@@ -24,6 +24,6 @@
     "pdfjs-dist": "^5.5.207",
     "pdfkit": "^0.17.1",
     "pg": "^8.20.0",
-    "zod": "^3.24.2"
+    "zod": "^4.3.6"
   }
 }