diff --git a/package.json b/package.json
index d323bb4..e2393a5 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
     "drizzle-orm": "^0.45.1",
     "hono": "^4.11.3",
     "tsyringe": "^4.10.0",
-    "zod": "^3.25.67"
+    "zod": "^4.3.5"
   },
   "devDependencies": {
     "@cloudflare/vite-plugin": "^1.19.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 3d63edd..2c5cdcd 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -24,8 +24,8 @@ importers:
         specifier: ^4.10.0
         version: 4.10.0
       zod:
-        specifier: ^3.25.67
-        version: 3.25.67
+        specifier: ^4.3.5
+        version: 4.3.5
     devDependencies:
       '@cloudflare/vite-plugin':
         specifier: ^1.19.0
@@ -3001,17 +3001,20 @@ packages:
   zod@3.22.3:
     resolution: {integrity: sha512-EjIevzuJRiRPbVH4mGc8nApb/lVLKVpmUhAaR5R5doKGfAnGJ6Gr3CViAVjP+4FWSxCsybeWQdcgCtbX+7oZug==}
 
-  zod@3.25.67:
-    resolution: {integrity: sha512-idA2YXwpCdqUSKRCACDE6ItZD9TZzy3OZMtpfLoh6oPR47lipysRrJfjzMqFxQ3uJuUPyUeWe1r9vLH33xO/Qw==}
+  zod@3.25.76:
+    resolution: {integrity: sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==}
+
+  zod@4.3.5:
+    resolution: {integrity: sha512-k7Nwx6vuWx1IJ9Bjuf4Zt1PEllcwe7cls3VNzm4CQ1/hgtFUK2bRNG3rvnpPUhFjmqJKAKtjV576KnUkHocg/g==}
 
 snapshots:
 
   '@abraham/reflection@0.13.0': {}
 
-  '@asteasolutions/zod-to-openapi@7.3.4(zod@3.25.67)':
+  '@asteasolutions/zod-to-openapi@7.3.4(zod@3.25.76)':
     dependencies:
       openapi3-ts: 4.4.0
-      zod: 3.25.67
+      zod: 3.25.76
 
   '@babel/code-frame@7.27.1':
     dependencies:
@@ -4162,11 +4165,11 @@ snapshots:
 
   chanfana@2.8.3:
     dependencies:
-      '@asteasolutions/zod-to-openapi': 7.3.4(zod@3.25.67)
+      '@asteasolutions/zod-to-openapi': 7.3.4(zod@3.25.76)
       js-yaml: 4.1.0
       openapi3-ts: 4.4.0
       yargs-parser: 22.0.0
-      zod: 3.25.67
+      zod: 3.25.76
 
   check-error@2.1.1: {}
 
@@ -5899,4 +5902,6 @@ snapshots:
 
   zod@3.22.3: {}
 
-  zod@3.25.67: {}
+  zod@3.25.76: {}
+
+  zod@4.3.5: {}