diff --git a/package.json b/package.json
index 439a508..eeff03a 100644
--- a/package.json
+++ b/package.json
@@ -62,7 +62,7 @@
     "@modelcontextprotocol/sdk": "^1.17.5",
     "file-type": "^21.0.0",
     "https-proxy-agent": "^7.0.6",
-    "zod": "^3.25.76"
+    "zod": "^4.1.12"
   },
   "devDependencies": {
     "@anthropic-ai/dxt": "^0.2.6",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 662e8e7..1aa8321 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -21,8 +21,8 @@ importers:
         specifier: ^7.0.6
         version: 7.0.6
       zod:
-        specifier: ^3.25.76
-        version: 3.25.76
+        specifier: ^4.1.12
+        version: 4.1.12
     devDependencies:
       '@anthropic-ai/dxt':
         specifier: ^0.2.6
@@ -3804,6 +3804,9 @@ packages:
   zod@3.25.76:
     resolution: {integrity: sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==}
 
+  zod@4.1.12:
+    resolution: {integrity: sha512-JInaHOamG8pt5+Ey8kGmdcAcg3OL9reK8ltczgHTAwNhMys/6ThXHityHxVV2p3fkw/c+MAvBHFVYHFZDmjMCQ==}
+
   zwitch@1.0.5:
     resolution: {integrity: sha512-V50KMwwzqJV0NpZIZFwfOD5/lyny3WlSzRiXgA0G7VUnRlqttta1L6UQIHzd6EuBY/cHGfwTIck7w1yH6Q5zUw==}
 
@@ -7817,4 +7820,6 @@ snapshots:
 
   zod@3.25.76: {}
 
+  zod@4.1.12: {}
+
   zwitch@1.0.5: {}