diff --git a/package-lock.json b/package-lock.json
index 1d63415..657b8d1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5891,7 +5891,7 @@
         "tsup": "^8.0.0",
         "typescript": "^5.4.0",
         "vitest": "^4.1.10",
-        "zod": "^3.22.0"
+        "zod": "^4.4.3"
       },
       "peerDependencies": {
         "ai": ">=4.0.0",
@@ -5903,6 +5903,16 @@
         }
       }
     },
+    "packages/ai-sdk/node_modules/zod": {
+      "version": "4.4.3",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-4.4.3.tgz",
+      "integrity": "sha512-ytENFjIJFl2UwYglde2jchW2Hwm4GJFLDiSXWdTrJQBIN9Fcyp7n4DhxJEiWNAJMV1/BqWfW/kkg71UDcHJyTQ==",
+      "dev": true,
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/colinhacks"
+      }
+    },
     "packages/langchain": {
       "name": "@kakunin/langchain",
       "version": "0.2.1",
@@ -5916,13 +5926,23 @@
         "tsup": "^8.0.0",
         "typescript": "^5.4.0",
         "vitest": "^4.1.10",
-        "zod": "^3.22.0"
+        "zod": "^4.4.3"
       },
       "peerDependencies": {
         "@langchain/core": ">=0.1.0",
         "zod": ">=3.0.0"
       }
     },
+    "packages/langchain/node_modules/zod": {
+      "version": "4.4.3",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-4.4.3.tgz",
+      "integrity": "sha512-ytENFjIJFl2UwYglde2jchW2Hwm4GJFLDiSXWdTrJQBIN9Fcyp7n4DhxJEiWNAJMV1/BqWfW/kkg71UDcHJyTQ==",
+      "dev": true,
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/colinhacks"
+      }
+    },
     "packages/mastra": {
       "name": "@kakunin/mastra",
       "version": "0.3.0",
@@ -5935,13 +5955,23 @@
         "tsup": "^8.0.0",
         "typescript": "^5.4.0",
         "vitest": "^4.1.10",
-        "zod": "^3.22.0"
+        "zod": "^4.4.3"
       },
       "peerDependencies": {
         "@mastra/core": ">=0.1.0",
         "zod": ">=3.0.0"
       }
     },
+    "packages/mastra/node_modules/zod": {
+      "version": "4.4.3",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-4.4.3.tgz",
+      "integrity": "sha512-ytENFjIJFl2UwYglde2jchW2Hwm4GJFLDiSXWdTrJQBIN9Fcyp7n4DhxJEiWNAJMV1/BqWfW/kkg71UDcHJyTQ==",
+      "dev": true,
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/colinhacks"
+      }
+    },
     "packages/middleware": {
       "name": "@kakunin/middleware",
       "version": "0.2.0",
diff --git a/packages/ai-sdk/package.json b/packages/ai-sdk/package.json
index c832be1..326b69b 100644
--- a/packages/ai-sdk/package.json
+++ b/packages/ai-sdk/package.json
@@ -55,7 +55,7 @@
     "tsup": "^8.0.0",
     "typescript": "^5.4.0",
     "vitest": "^4.1.10",
-    "zod": "^3.22.0"
+    "zod": "^4.4.3"
   },
   "bugs": {
     "url": "https://github.com/nqzai/kakunin-integrations/issues"
diff --git a/packages/langchain/package.json b/packages/langchain/package.json
index c38c1eb..014a46b 100644
--- a/packages/langchain/package.json
+++ b/packages/langchain/package.json
@@ -45,7 +45,7 @@
     "tsup": "^8.0.0",
     "typescript": "^5.4.0",
     "vitest": "^4.1.10",
-    "zod": "^3.22.0"
+    "zod": "^4.4.3"
   },
   "repository": {
     "type": "git",
diff --git a/packages/mastra/package.json b/packages/mastra/package.json
index 54c5d72..106de0c 100644
--- a/packages/mastra/package.json
+++ b/packages/mastra/package.json
@@ -50,7 +50,7 @@
     "tsup": "^8.0.0",
     "typescript": "^5.4.0",
     "vitest": "^4.1.10",
-    "zod": "^3.22.0"
+    "zod": "^4.4.3"
   },
   "bugs": {
     "url": "https://github.com/nqzai/kakunin-integrations/issues"