diff --git a/package-lock.json b/package-lock.json
index f38c90e..71aa49c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5824,9 +5824,9 @@
       "license": "MIT"
     },
     "node_modules/zod": {
-      "version": "3.25.76",
-      "resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
-      "integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==",
+      "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"
@@ -5849,7 +5849,7 @@
         "@modelcontextprotocol/sdk": "^1.29.0",
         "drizzle-orm": "^0.45.2",
         "nanoid": "^5.0.7",
-        "zod": "^3.25.76"
+        "zod": "^4.4.3"
       },
       "devDependencies": {
         "typescript": "^5.8.3"
@@ -5878,7 +5878,7 @@
       "version": "0.2.0",
       "dependencies": {
         "@modelcontextprotocol/sdk": "^1.29.0",
-        "zod": "^3.25.76"
+        "zod": "^4.4.3"
       },
       "bin": {
         "corpos-mcp-knowledge": "dist/server.js"
diff --git a/packages/core/package.json b/packages/core/package.json
index 28f14f9..ebb416b 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -20,7 +20,7 @@
     "@modelcontextprotocol/sdk": "^1.29.0",
     "drizzle-orm": "^0.45.2",
     "nanoid": "^5.0.7",
-    "zod": "^3.25.76"
+    "zod": "^4.4.3"
   },
   "devDependencies": {
     "typescript": "^5.8.3"
diff --git a/packages/mcp-knowledge/package.json b/packages/mcp-knowledge/package.json
index ce30944..afd19af 100644
--- a/packages/mcp-knowledge/package.json
+++ b/packages/mcp-knowledge/package.json
@@ -13,7 +13,7 @@
   },
   "dependencies": {
     "@modelcontextprotocol/sdk": "^1.29.0",
-    "zod": "^3.25.76"
+    "zod": "^4.4.3"
   },
   "devDependencies": {
     "typescript": "^5.8.3"