diff --git a/package.json b/package.json
index 71a4dd99..411f8850 100644
--- a/package.json
+++ b/package.json
@@ -100,7 +100,7 @@
     "typescript": "5.9.3",
     "valibot": "1.2.0",
     "vitest": "4.0.16",
-    "zod": "3.25.76",
+    "zod": "4.3.5",
     "zod-to-json-schema": "3.25.1"
   }
 }
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 2fab2d25..cda411d7 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -100,11 +100,11 @@ importers:
         specifier: 4.0.16
         version: 4.0.16(@types/node@24.10.7)(tsx@4.21.0)
       zod:
-        specifier: 3.25.76
-        version: 3.25.76
+        specifier: 4.3.5
+        version: 4.3.5
       zod-to-json-schema:
         specifier: 3.25.1
-        version: 3.25.1(zod@3.25.76)
+        version: 3.25.1(zod@4.3.5)
 
 packages:
 
@@ -4360,6 +4360,9 @@ packages:
   zod@3.25.76:
     resolution: {integrity: sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==}
 
+  zod@4.3.5:
+    resolution: {integrity: sha512-k7Nwx6vuWx1IJ9Bjuf4Zt1PEllcwe7cls3VNzm4CQ1/hgtFUK2bRNG3rvnpPUhFjmqJKAKtjV576KnUkHocg/g==}
+
   zx@8.8.5:
     resolution: {integrity: sha512-SNgDF5L0gfN7FwVOdEFguY3orU5AkfFZm9B5YSHog/UDHv+lvmd82ZAsOenOkQixigwH2+yyH198AwNdKhj+RA==}
     engines: {node: '>= 12.17.0'}
@@ -8956,10 +8959,12 @@ snapshots:
     dependencies:
       zod: 3.25.76
 
-  zod-to-json-schema@3.25.1(zod@3.25.76):
+  zod-to-json-schema@3.25.1(zod@4.3.5):
     dependencies:
-      zod: 3.25.76
+      zod: 4.3.5
 
   zod@3.25.76: {}
 
+  zod@4.3.5: {}
+
   zx@8.8.5: {}