diff --git a/package-lock.json b/package-lock.json
index a0dac49..8257feb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -14,7 +14,7 @@
         "dotenv": "^17.4.2",
         "ssh2": "^1.17.0",
         "uuid": "^14.0.0",
-        "zod": "^3.25.76"
+        "zod": "^4.3.6"
       },
       "bin": {
         "claude-code-ssh": "src/index.js",
@@ -2376,9 +2376,9 @@
       }
     },
     "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"
diff --git a/package.json b/package.json
index 4e7ade5..09966a2 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "dotenv": "^17.4.2",
     "ssh2": "^1.17.0",
     "uuid": "^14.0.0",
-    "zod": "^3.25.76"
+    "zod": "^4.3.6"
   },
   "devDependencies": {
     "eslint": "^8.56.0",