diff --git a/services/intake/package.json b/services/intake/package.json
index 0109675..57b4f86 100644
--- a/services/intake/package.json
+++ b/services/intake/package.json
@@ -14,7 +14,7 @@
     "@fastify/rate-limit": "^10.3.0",
     "fastify": "^5.3.3",
     "pg": "^8.16.0",
-    "zod": "^3.25.0"
+    "zod": "^4.6.6"
   },
   "packageManager": "pnpm@11.19.0"
 }
diff --git a/services/intake/pnpm-lock.yaml b/services/intake/pnpm-lock.yaml
index f099a32..3473320 100644
--- a/services/intake/pnpm-lock.yaml
+++ b/services/intake/pnpm-lock.yaml
@@ -21,8 +21,8 @@ importers:
         specifier: ^8.16.0
         version: 8.23.1
       zod:
-        specifier: ^3.25.0
-        version: 3.25.76
+        specifier: ^4.6.6
+        version: 4.6.6
 
 packages:
 
@@ -262,8 +262,8 @@ packages:
     resolution: {integrity: sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==}
     engines: {node: '>=0.4'}
 
-  zod@3.25.76:
-    resolution: {integrity: sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==}
+  zod@4.6.6:
+    resolution: {integrity: sha512-4UmzQUF5fxvfcYHlbjBmejU+w+hbDnWFx4aS8kBx7nPBHcO2SqPbpAG8snbdg+Xse4pRefR98hgjFgIMCI/UhA==}
 
 snapshots:
 
@@ -505,4 +505,4 @@ snapshots:
 
   xtend@4.0.2: {}
 
-  zod@3.25.76: {}
+  zod@4.6.6: {}