diff --git a/package-lock.json b/package-lock.json
index 17cd6d2..ebac8df 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15,7 +15,7 @@
         "sharp": "^0.34.3",
         "ulid": "^3.0.1",
         "uuid": "^11.1.0",
-        "zod": "^3.25.1"
+        "zod": "^4.0.17"
       },
       "bin": {
         "mcp-control": "build/index.js"
@@ -1273,6 +1273,24 @@
         "node": ">=18"
       }
     },
+    "node_modules/@modelcontextprotocol/sdk/node_modules/zod": {
+      "version": "3.25.76",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
+      "integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==",
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/colinhacks"
+      }
+    },
+    "node_modules/@modelcontextprotocol/sdk/node_modules/zod-to-json-schema": {
+      "version": "3.24.6",
+      "resolved": "https://registry.npmjs.org/zod-to-json-schema/-/zod-to-json-schema-3.24.6.tgz",
+      "integrity": "sha512-h/z3PKvcTcTetyjl1fkj79MHNEjm+HpD6NXheWjzOekY7kV+lwDYnHw+ivHkijnCSMz1yJaWBD9vu/Fcmk+vEg==",
+      "license": "ISC",
+      "peerDependencies": {
+        "zod": "^3.24.1"
+      }
+    },
     "node_modules/@nodelib/fs.scandir": {
       "version": "2.1.5",
       "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.5.tgz",
@@ -6476,20 +6494,13 @@
       }
     },
     "node_modules/zod": {
-      "version": "3.25.1",
-      "resolved": "https://registry.npmjs.org/zod/-/zod-3.25.1.tgz",
-      "integrity": "sha512-bkxUGQiqWDTXHSgqtevYDri5ee2GPC9szPct4pqpzLEpswgDQmuseDz81ZF0AnNu1xsmnBVmbtv/t/WeUIHlpg==",
+      "version": "4.0.17",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-4.0.17.tgz",
+      "integrity": "sha512-1PHjlYRevNxxdy2JZ8JcNAw7rX8V9P1AKkP+x/xZfxB0K5FYfuV+Ug6P/6NVSR2jHQ+FzDDoDHS04nYUsOIyLQ==",
       "license": "MIT",
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
       }
-    },
-    "node_modules/zod-to-json-schema": {
-      "version": "3.24.3",
-      "license": "ISC",
-      "peerDependencies": {
-        "zod": "^3.24.1"
-      }
     }
   }
 }
diff --git a/package.json b/package.json
index 91747fc..9a8ee26 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "sharp": "^0.34.3",
     "ulid": "^3.0.1",
     "uuid": "^11.1.0",
-    "zod": "^3.25.1"
+    "zod": "^4.0.17"
   },
   "devDependencies": {
     "@eslint/js": "^9.31.0",