diff --git a/example/aggregator/package.json b/example/aggregator/package.json
index fef51f6..c5b31d8 100644
--- a/example/aggregator/package.json
+++ b/example/aggregator/package.json
@@ -9,7 +9,7 @@
   },
   "dependencies": {
     "@nervina-labs/cota-sdk": "0.9.2",
-    "@types/node": "18.19.2",
+    "@types/node": "20.16.5",
     "ts-node": "10.9.1",
     "tslib": "2.6.2",
     "typescript": "5.3.3"
diff --git a/example/aggregator/yarn.lock b/example/aggregator/yarn.lock
index 7401533..0423c57 100644
--- a/example/aggregator/yarn.lock
+++ b/example/aggregator/yarn.lock
@@ -94,12 +94,12 @@
   resolved "https://registry.yarnpkg.com/@tsconfig/node16/-/node16-1.0.2.tgz#423c77877d0569db20e1fc80885ac4118314010e"
   integrity sha512-eZxlbI8GZscaGS7kkc/trHTT5xgrjH3/1n2JDwusC9iahPKWMRvRjJSAN5mCXviuTGQ/lHnhvv8Q1YTpnfz9gA==
 
-"@types/node@18.19.2":
-  version "18.19.2"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-18.19.2.tgz#865107157bda220eef9fa8c2173152d6559a41ae"
-  integrity sha512-6wzfBdbWpe8QykUkXBjtmO3zITA0A3FIjoy+in0Y2K4KrCiRhNYJIdwAPDffZ3G6GnaKaSLSEa9ZuORLfEoiwg==
+"@types/node@20.16.5":
+  version "20.16.5"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-20.16.5.tgz#d43c7f973b32ffdf9aa7bd4f80e1072310fd7a53"
+  integrity sha512-VwYCweNo3ERajwy0IUlqqcyZ8/A7Zwa9ZP3MnENWcB11AejO+tLy3pu850goUW2FC/IJMdZUfKpX/yxL1gymCA==
   dependencies:
-    undici-types "~5.26.4"
+    undici-types "~6.19.2"
 
 acorn-walk@^8.1.1:
   version "8.2.0"
@@ -359,10 +359,10 @@ typescript@5.3.3:
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-5.3.3.tgz#b3ce6ba258e72e6305ba66f5c9b452aaee3ffe37"
   integrity sha512-pXWcraxM0uxAS+tN0AG/BF2TyqmHO014Z070UsJ+pFvYuRSq8KH8DmWpnbXe0pEPDHXZV3FcAbJkijJ5oNEnWw==
 
-undici-types@~5.26.4:
-  version "5.26.5"
-  resolved "https://registry.yarnpkg.com/undici-types/-/undici-types-5.26.5.tgz#bcd539893d00b56e964fd2657a4866b221a65617"
-  integrity sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA==
+undici-types@~6.19.2:
+  version "6.19.8"
+  resolved "https://registry.yarnpkg.com/undici-types/-/undici-types-6.19.8.tgz#35111c9d1437ab83a7cdc0abae2f26d88eda0a02"
+  integrity sha512-ve2KP6f/JnbPBFyobGHuerC9g1FYGn/F8n1LWTwNxCEzd6IfqTwUQcNXgEtmmQ6DlRrC1hrSrBnCZPokRrDHjw==
 
 v8-compile-cache-lib@^3.0.1:
   version "3.0.1"
diff --git a/package.json b/package.json
index e481440..7e22786 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
   },
   "devDependencies": {
     "@types/crypto-js": "4.2.1",
-    "@types/node": "18.19.2",
+    "@types/node": "20.16.5",
     "@typescript-eslint/parser": "5.62.0",
     "@babel/eslint-parser": "7.23.3",
     "eslint": "8.40.0",
diff --git a/yarn.lock b/yarn.lock
index 7b89dfa..90381a1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -180,12 +180,12 @@
   resolved "https://registry.yarnpkg.com/@types/json5/-/json5-0.0.29.tgz#ee28707ae94e11d2b827bcbe5270bcea7f3e71ee"
   integrity sha512-dRLjCWHYg4oaA77cxO64oO+7JwCwnIzkZPdrrC71jQmQtlhM556pwKo5bUzqvZndkVbeFLIIi+9TC40JNF5hNQ==
 
-"@types/node@18.19.2":
-  version "18.19.2"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-18.19.2.tgz#865107157bda220eef9fa8c2173152d6559a41ae"
-  integrity sha512-6wzfBdbWpe8QykUkXBjtmO3zITA0A3FIjoy+in0Y2K4KrCiRhNYJIdwAPDffZ3G6GnaKaSLSEa9ZuORLfEoiwg==
+"@types/node@20.16.5":
+  version "20.16.5"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-20.16.5.tgz#d43c7f973b32ffdf9aa7bd4f80e1072310fd7a53"
+  integrity sha512-VwYCweNo3ERajwy0IUlqqcyZ8/A7Zwa9ZP3MnENWcB11AejO+tLy3pu850goUW2FC/IJMdZUfKpX/yxL1gymCA==
   dependencies:
-    undici-types "~5.26.4"
+    undici-types "~6.19.2"
 
 "@typescript-eslint/parser@5.62.0":
   version "5.62.0"
@@ -1936,10 +1936,10 @@ unbox-primitive@^1.0.2:
     has-symbols "^1.0.3"
     which-boxed-primitive "^1.0.2"
 
-undici-types@~5.26.4:
-  version "5.26.5"
-  resolved "https://registry.yarnpkg.com/undici-types/-/undici-types-5.26.5.tgz#bcd539893d00b56e964fd2657a4866b221a65617"
-  integrity sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA==
+undici-types@~6.19.2:
+  version "6.19.8"
+  resolved "https://registry.yarnpkg.com/undici-types/-/undici-types-6.19.8.tgz#35111c9d1437ab83a7cdc0abae2f26d88eda0a02"
+  integrity sha512-ve2KP6f/JnbPBFyobGHuerC9g1FYGn/F8n1LWTwNxCEzd6IfqTwUQcNXgEtmmQ6DlRrC1hrSrBnCZPokRrDHjw==
 
 uri-js@^4.2.2:
   version "4.4.1"