diff --git a/bun.lock b/bun.lock
index 68a1e57..30016f6 100644
--- a/bun.lock
+++ b/bun.lock
@@ -8,7 +8,7 @@
         "@modelcontextprotocol/sdk": "^1.27.1",
         "mammoth": "^1.12.0",
         "unpdf": "^1.4.0",
-        "zod": "^3.22.4",
+        "zod": "^4.6.5",
       },
       "devDependencies": {
         "@types/bun": "latest",
@@ -254,8 +254,10 @@
 
     "xmlbuilder": ["xmlbuilder@10.1.1", "", {}, "sha512-OyzrcFLL/nb6fMGHbiRDuPup9ljBycsdCypwuyg5AAHvyWzGfChJpCXMG88AGTIMFhGZ9RccFN1e6lhg3hkwKg=="],
 
-    "zod": ["zod@3.25.76", "", {}, "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ=="],
+    "zod": ["zod@4.6.5", "", {}, "sha512-v5l/aFXZQeai4awLbOpSoHecE9UiMrnfx75tEXLjNonXVARxQ5mOeipTjROUchszUNCqnE+hqAMujRsRHsut2Q=="],
 
     "zod-to-json-schema": ["zod-to-json-schema@3.25.1", "", { "peerDependencies": { "zod": "^3.25 || ^4" } }, "sha512-pM/SU9d3YAggzi6MtR4h7ruuQlqKtad8e9S0fmxcMi+ueAK5Korys/aWcV9LIIHTVbj01NdzxcnXSN+O74ZIVA=="],
+
+    "@modelcontextprotocol/sdk/zod": ["zod@3.25.76", "", {}, "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ=="],
   }
 }
diff --git a/package.json b/package.json
index 7efa9ed..ee816e6 100644
--- a/package.json
+++ b/package.json
@@ -61,7 +61,7 @@
     "@modelcontextprotocol/sdk": "^1.27.1",
     "mammoth": "^1.12.0",
     "unpdf": "^1.4.0",
-    "zod": "^3.22.4"
+    "zod": "^4.6.5"
   },
   "devDependencies": {
     "@types/bun": "latest"