diff --git a/hellochain_dapp/package.json b/hellochain_dapp/package.json
index 1630584..f3a0e80 100644
--- a/hellochain_dapp/package.json
+++ b/hellochain_dapp/package.json
@@ -12,7 +12,7 @@
     "lint": "vue-cli-service lint"
   },
   "dependencies": {
-    "axios": "^0.19.0",
+    "axios": "^0.21.2",
     "core-js": "^3.1.2",
     "lodash": "^4.17.15",
     "moment": "^2.24.0",
diff --git a/hellochain_dapp/yarn.lock b/hellochain_dapp/yarn.lock
index cc75056..868e58f 100644
--- a/hellochain_dapp/yarn.lock
+++ b/hellochain_dapp/yarn.lock
@@ -1530,13 +1530,12 @@ aws4@^1.8.0:
   resolved "https://registry.npm.taobao.org/aws4/download/aws4-1.8.0.tgz#f0e003d9ca9e7f59c7a508945d7b2ef9a04a542f"
   integrity sha1-8OAD2cqef1nHpQiUXXsu+aBKVC8=
 
-axios@^0.19.0:
-  version "0.19.0"
-  resolved "https://registry.yarnpkg.com/axios/-/axios-0.19.0.tgz#8e09bff3d9122e133f7b8101c8fbdd00ed3d2ab8"
-  integrity sha512-1uvKqKQta3KBxIz14F2v06AEHZ/dIoeKfbTRkK1E5oqjDnuEerLmYTgJB5AiQZHJcljpg1TuRzdjDR06qNk0DQ==
+axios@^0.21.2:
+  version "0.21.2"
+  resolved "https://registry.yarnpkg.com/axios/-/axios-0.21.2.tgz#21297d5084b2aeeb422f5d38e7be4fbb82239017"
+  integrity sha512-87otirqUw3e8CzHTMO+/9kh/FSgXt/eVDvipijwDtEuwbkySWZ9SBm6VEubmJ/kLKEoLQV/POhxXFb66bfekfg==
   dependencies:
-    follow-redirects "1.5.10"
-    is-buffer "^2.0.2"
+    follow-redirects "^1.14.0"
 
 babel-eslint@^10.0.1:
   version "10.0.3"
@@ -2833,14 +2832,7 @@ debug@2.6.9, debug@^2.2.0, debug@^2.3.3:
   dependencies:
     ms "2.0.0"
 
-debug@=3.1.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
-  integrity sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==
-  dependencies:
-    ms "2.0.0"
-
-debug@^3.0.0, debug@^3.1.1, debug@^3.2.5, debug@^3.2.6:
+debug@^3.1.1, debug@^3.2.5, debug@^3.2.6:
   version "3.2.6"
   resolved "https://registry.npm.taobao.org/debug/download/debug-3.2.6.tgz#e83d17de16d8a7efb7717edbe5fb10135eee629b"
   integrity sha1-6D0X3hbYp++3cX7b5fsQE17uYps=
@@ -3805,19 +3797,10 @@ flush-write-stream@^1.0.0:
     inherits "^2.0.3"
     readable-stream "^2.3.6"
 
-follow-redirects@1.5.10:
-  version "1.5.10"
-  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.5.10.tgz#7b7a9f9aea2fdff36786a94ff643ed07f4ff5e2a"
-  integrity sha512-0V5l4Cizzvqt5D44aTXbFZz+FtyXV1vrDN6qrelxtfYQKW0KO0W2T/hkE8xvGa/540LkZlkaUjO4ailYTFtHVQ==
-  dependencies:
-    debug "=3.1.0"
-
-follow-redirects@^1.0.0:
-  version "1.9.0"
-  resolved "https://registry.npm.taobao.org/follow-redirects/download/follow-redirects-1.9.0.tgz#8d5bcdc65b7108fe1508649c79c12d732dcedb4f"
-  integrity sha1-jVvNxltxCP4VCGScecEtcy3O208=
-  dependencies:
-    debug "^3.0.0"
+follow-redirects@^1.0.0, follow-redirects@^1.14.0:
+  version "1.15.0"
+  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.15.0.tgz#06441868281c86d0dda4ad8bdaead2d02dca89d4"
+  integrity sha512-aExlJShTV4qOUOL7yF1U5tvLCB0xQuudbf6toyYA0E/acBNw71mvjFTnLaRp50aQaYocMR0a/RMMBIHeZnGyjQ==
 
 for-each@^0.3.3:
   version "0.3.3"
@@ -4676,11 +4659,6 @@ is-buffer@^1.1.5:
   resolved "https://registry.npm.taobao.org/is-buffer/download/is-buffer-1.1.6.tgz#efaa2ea9daa0d7ab2ea13a97b2b8ad51fefbe8be"
   integrity sha1-76ouqdqg16suoTqXsritUf776L4=
 
-is-buffer@^2.0.2:
-  version "2.0.4"
-  resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-2.0.4.tgz#3e572f23c8411a5cfd9557c849e3665e0b290623"
-  integrity sha512-Kq1rokWXOPXWuaMAqZiJW4XxsmD9zGx9q4aePabbn3qCRGedtH7Cm+zV8WETitMfu1wdh+Rvd6w5egwSngUX2A==
-
 is-callable@^1.1.3, is-callable@^1.1.4:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/is-callable/-/is-callable-1.1.4.tgz#1e1adf219e1eeb684d691f9d6a05ff0d30a24d75"