diff --git a/server/package-lock.json b/server/package-lock.json
index b4596f8..691b967 100644
--- a/server/package-lock.json
+++ b/server/package-lock.json
@@ -18,7 +18,7 @@
         "pino": "^9.7.0",
         "pino-pretty": "^13.0.0",
         "ws": "^8.18.3",
-        "zod": "^3.25.67"
+        "zod": "^4.3.6"
       },
       "devDependencies": {
         "@types/cors": "^2.8.19",
@@ -2030,9 +2030,9 @@
       }
     },
     "node_modules/zod": {
-      "version": "3.25.67",
-      "resolved": "https://registry.npmjs.org/zod/-/zod-3.25.67.tgz",
-      "integrity": "sha512-idA2YXwpCdqUSKRCACDE6ItZD9TZzy3OZMtpfLoh6oPR47lipysRrJfjzMqFxQ3uJuUPyUeWe1r9vLH33xO/Qw==",
+      "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"
diff --git a/server/package.json b/server/package.json
index d514527..bb84937 100644
--- a/server/package.json
+++ b/server/package.json
@@ -21,7 +21,7 @@
     "pino": "^9.7.0",
     "pino-pretty": "^13.0.0",
     "ws": "^8.18.3",
-    "zod": "^3.25.67"
+    "zod": "^4.3.6"
   },
   "devDependencies": {
     "@types/cors": "^2.8.19",