diff --git a/package.json b/package.json
index a57ed0f..4aa1292 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "google-auth-library": "^10.2.0",
     "googleapis": "^154.1.0",
     "winston": "^3.17.0",
-    "zod": "^3.23.8"
+    "zod": "^4.0.14"
   },
   "devDependencies": {
     "@types/node": "^22.13.9",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 95a65c9..8c704d4 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -45,8 +45,8 @@ importers:
         specifier: ^3.17.0
         version: 3.17.0
       zod:
-        specifier: ^3.23.8
-        version: 3.24.2
+        specifier: ^4.0.14
+        version: 4.0.14
     devDependencies:
       '@types/node':
         specifier: ^22.13.9
@@ -2477,8 +2477,11 @@ packages:
     peerDependencies:
       zod: ^3.24.1
 
-  zod@3.24.2:
-    resolution: {integrity: sha512-lY7CDW43ECgW9u1TcT3IoXHflywfVqDYze4waEz812jR/bZ8FHDsl7pFQoSZTz5N+2NqRXs8GBwnAwo3ZNxqhQ==}
+  zod@3.25.76:
+    resolution: {integrity: sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==}
+
+  zod@4.0.14:
+    resolution: {integrity: sha512-nGFJTnJN6cM2v9kXL+SOBq3AtjQby3Mv5ySGFof5UGRHrRioSJ5iG680cYNjE/yWk671nROcpPj4hAS8nyLhSw==}
 
 snapshots:
 
@@ -2942,8 +2945,8 @@ snapshots:
       express-rate-limit: 7.5.0(express@5.0.1)
       pkce-challenge: 5.0.0
       raw-body: 3.0.0
-      zod: 3.24.2
-      zod-to-json-schema: 3.24.3(zod@3.24.2)
+      zod: 3.25.76
+      zod-to-json-schema: 3.24.3(zod@3.25.76)
     transitivePeerDependencies:
       - supports-color
 
@@ -5090,8 +5093,10 @@ snapshots:
 
   yocto-queue@1.1.1: {}
 
-  zod-to-json-schema@3.24.3(zod@3.24.2):
+  zod-to-json-schema@3.24.3(zod@3.25.76):
     dependencies:
-      zod: 3.24.2
+      zod: 3.25.76
+
+  zod@3.25.76: {}
 
-  zod@3.24.2: {}
+  zod@4.0.14: {}