diff --git a/apps/api/package.json b/apps/api/package.json
index 4c07f3ba..e8bed4d4 100644
--- a/apps/api/package.json
+++ b/apps/api/package.json
@@ -35,7 +35,7 @@
     "@peac/pay402": "workspace:^0.9.14",
     "hono": "^4.9.7",
     "@hono/node-server": "^1.8.2",
-    "zod": "^3.22.0"
+    "zod": "^4.1.12"
   },
   "devDependencies": {
     "@types/node": "^20.0.0",
diff --git a/apps/bridge/package.json b/apps/bridge/package.json
index aedb8446..88f92b98 100644
--- a/apps/bridge/package.json
+++ b/apps/bridge/package.json
@@ -37,7 +37,7 @@
     "hono": "^4.9.7",
     "@hono/node-server": "^1.8.2",
     "jose": "^5.0.0",
-    "zod": "^3.22.0"
+    "zod": "^4.1.12"
   },
   "devDependencies": {
     "@types/node": "^20.0.0",
diff --git a/packages/core/package.json b/packages/core/package.json
index 3b2badf6..52bab95c 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -45,7 +45,7 @@
   "dependencies": {
     "jose": "^5.2.0",
     "lru-cache": "^10.0.0",
-    "zod": "^3.22.0"
+    "zod": "^4.1.12"
   },
   "devDependencies": {
     "@types/node": "^20.0.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 0dbea0b3..1fa96b2f 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -81,8 +81,8 @@ importers:
         specifier: ^4.9.7
         version: 4.9.7
       zod:
-        specifier: ^3.22.0
-        version: 3.25.76
+        specifier: ^4.1.12
+        version: 4.1.12
     devDependencies:
       '@types/jest':
         specifier: ^29.0.0
@@ -139,8 +139,8 @@ importers:
         specifier: ^5.0.0
         version: 5.10.0
       zod:
-        specifier: ^3.22.0
-        version: 3.25.76
+        specifier: ^4.1.12
+        version: 4.1.12
     devDependencies:
       '@types/node':
         specifier: ^20.0.0
@@ -202,8 +202,8 @@ importers:
         specifier: ^10.0.0
         version: 10.4.3
       zod:
-        specifier: ^3.22.0
-        version: 3.25.76
+        specifier: ^4.1.12
+        version: 4.1.12
     devDependencies:
       '@types/jest':
         specifier: ^29.0.0
@@ -5120,6 +5120,6 @@ packages:
     engines: {node: '>=10'}
     dev: true
 
-  /zod@3.25.76:
-    resolution: {integrity: sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==}
+  /zod@4.1.12:
+    resolution: {integrity: sha512-JInaHOamG8pt5+Ey8kGmdcAcg3OL9reK8ltczgHTAwNhMys/6ThXHityHxVV2p3fkw/c+MAvBHFVYHFZDmjMCQ==}
     dev: false