diff --git a/package-lock.json b/package-lock.json
index 27a3595..2241e67 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,7 @@
       "version": "0.1.0",
       "license": "MIT",
       "dependencies": {
-        "@objectstack/spec": "^0.8.2"
+        "@objectstack/spec": "^4.0.5"
       },
       "devDependencies": {
         "@types/node": "^25.0.10",
@@ -20,15 +20,23 @@
       }
     },
     "node_modules/@objectstack/spec": {
-      "version": "0.8.2",
-      "resolved": "https://registry.npmjs.org/@objectstack/spec/-/spec-0.8.2.tgz",
-      "integrity": "sha512-PLEREF3dGIPRooKbAJPv8weC8cuAPFXoQcFXntGxeLdoCb4iOyDjujSRpCIpyG3dNXtDvr+SL8O1bX7QolsUFw==",
+      "version": "4.0.5",
+      "resolved": "https://registry.npmjs.org/@objectstack/spec/-/spec-4.0.5.tgz",
+      "integrity": "sha512-oGoPHRpYUmbgBnLRUHCTiuTo+DtVLdJ6nqH63hqNqBDfIX6g14np1TmszZcUvhb+UxBY8xXU8ivbL2sbUS806A==",
       "license": "Apache-2.0",
       "dependencies": {
-        "zod": "^4.3.6"
+        "zod": "^4.4.3"
       },
       "engines": {
         "node": ">=18.0.0"
+      },
+      "peerDependencies": {
+        "ai": "^6.0.0"
+      },
+      "peerDependenciesMeta": {
+        "ai": {
+          "optional": true
+        }
       }
     },
     "node_modules/@types/node": {
@@ -63,9 +71,9 @@
       "license": "MIT"
     },
     "node_modules/zod": {
-      "version": "4.3.6",
-      "resolved": "https://registry.npmjs.org/zod/-/zod-4.3.6.tgz",
-      "integrity": "sha512-rftlrkhHZOcjDwkGlnUtZZkvaPHCsDATp4pGpuOOMDaTdDDXF91wuVDJoWoPsKX/3YPQ5fHuF3STjcYyKr+Qhg==",
+      "version": "4.4.3",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-4.4.3.tgz",
+      "integrity": "sha512-ytENFjIJFl2UwYglde2jchW2Hwm4GJFLDiSXWdTrJQBIN9Fcyp7n4DhxJEiWNAJMV1/BqWfW/kkg71UDcHJyTQ==",
       "license": "MIT",
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
diff --git a/package.json b/package.json
index 844e9eb..917b4fa 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "example": "node dist/example.js"
   },
   "dependencies": {
-    "@objectstack/spec": "^0.8.2"
+    "@objectstack/spec": "^4.0.5"
   },
   "devDependencies": {
     "@types/node": "^25.0.10",