diff --git a/package.json b/package.json
index 791f21e..00c1d19 100644
--- a/package.json
+++ b/package.json
@@ -84,7 +84,7 @@
   "dependencies": {
     "marked": "^15.0.0",
     "marked-terminal": "^7.3.0",
-    "zod": "^3.25.76"
+    "zod": "^4.6.6"
   },
   "optionalDependencies": {
     "@superhq/shuru": "^0.1.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 2831ed1..4011eb4 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -25,8 +25,8 @@ importers:
         specifier: ^7.3.0
         version: 7.3.0(marked@15.0.12)
       zod:
-        specifier: ^3.25.76
-        version: 3.25.76
+        specifier: ^4.6.6
+        version: 4.6.6
     optionalDependencies:
       '@superhq/shuru':
         specifier: ^0.1.0
@@ -2180,8 +2180,8 @@ packages:
     resolution: {integrity: sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==}
     engines: {node: '>=10'}
 
-  zod@3.25.76:
-    resolution: {integrity: sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==}
+  zod@4.6.6:
+    resolution: {integrity: sha512-4UmzQUF5fxvfcYHlbjBmejU+w+hbDnWFx4aS8kBx7nPBHcO2SqPbpAG8snbdg+Xse4pRefR98hgjFgIMCI/UhA==}
 
 snapshots:
 
@@ -4190,4 +4190,4 @@ snapshots:
 
   yocto-queue@0.1.0: {}
 
-  zod@3.25.76: {}
+  zod@4.6.6: {}