diff --git a/mqttClient/package.json b/mqttClient/package.json
index e0c6318..9df1d30 100644
--- a/mqttClient/package.json
+++ b/mqttClient/package.json
@@ -9,7 +9,7 @@
   "dependencies": {
     "@types/node": "^12.0.8",
     "mqtt": "^3.0.0",
-    "node-fetch": "^2.6.0",
+    "node-fetch": "^2.6.7",
     "typescript": "^3.5.2",
     "uuid": "^3.3.2"
   }
diff --git a/mqttClient/yarn.lock b/mqttClient/yarn.lock
index ac24ba7..03fa2d6 100644
--- a/mqttClient/yarn.lock
+++ b/mqttClient/yarn.lock
@@ -337,10 +337,12 @@ next-tick@^1.0.0:
   resolved "https://registry.yarnpkg.com/next-tick/-/next-tick-1.0.0.tgz#ca86d1fe8828169b0120208e3dc8424b9db8342c"
   integrity sha1-yobR/ogoFpsBICCOPchCS524NCw=
 
-node-fetch@^2.6.0:
-  version "2.6.0"
-  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.0.tgz#e633456386d4aa55863f676a7ab0daa8fdecb0fd"
-  integrity sha512-8dG4H5ujfvFiqDmVu9fQ5bOHUC15JMjMY/Zumv26oOvvVJjM67KF8koCWIabKQ1GJIa9r2mMZscBq/TbdOcmNA==
+node-fetch@^2.6.7:
+  version "2.6.7"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.7.tgz#24de9fba827e3b4ae44dc8b20256a379160052ad"
+  integrity sha512-ZjMPFEfVx5j+y2yF35Kzx5sF7kDzxuDj6ziH4FFbOp87zKDZNx8yExJIb05OGF4Nlt9IHFIMBkRl41VdvcNdbQ==
+  dependencies:
+    whatwg-url "^5.0.0"
 
 once@^1.3.0, once@^1.3.1, once@^1.4.0:
   version "1.4.0"
@@ -483,6 +485,11 @@ to-absolute-glob@^2.0.0:
     is-absolute "^1.0.0"
     is-negated-glob "^1.0.0"
 
+tr46@~0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/tr46/-/tr46-0.0.3.tgz#8184fd347dac9cdc185992f3a6622e14b9d9ab6a"
+  integrity sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw==
+
 type@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/type/-/type-1.0.1.tgz#084c9a17fcc9151a2cdb1459905c2e45e4bb7d61"
@@ -526,6 +533,11 @@ uuid@^3.3.2:
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.3.2.tgz#1b4af4955eb3077c501c23872fc6513811587131"
   integrity sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA==
 
+webidl-conversions@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-3.0.1.tgz#24534275e2a7bc6be7bc86611cc16ae0a5654871"
+  integrity sha512-2JAn3z8AR6rjK8Sm8orRC0h/bcl/DqL7tRPdGZ4I1CjdF+EaMLmYxBHyXuKL849eucPFhvBoxMsflfOb8kxaeQ==
+
 websocket-stream@^5.1.2:
   version "5.5.0"
   resolved "https://registry.yarnpkg.com/websocket-stream/-/websocket-stream-5.5.0.tgz#9827f2846fc0d2b4dca7aab8f92980b2548b868e"
@@ -538,6 +550,14 @@ websocket-stream@^5.1.2:
     ws "^3.2.0"
     xtend "^4.0.0"
 
+whatwg-url@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-5.0.0.tgz#966454e8765462e37644d3626f6742ce8b70965d"
+  integrity sha512-saE57nupxk6v3HY35+jzBwYa0rKSy0XR8JSxZPwgLr7ys0IBzhGviA1/TUGJLmSVqs8pb9AnvICXEuOHLprYTw==
+  dependencies:
+    tr46 "~0.0.3"
+    webidl-conversions "^3.0.0"
+
 wrappy@1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"