diff --git a/mqttClient/package.json b/mqttClient/package.json
index e0c6318..14ec7aa 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": "^3.1.1",
     "typescript": "^3.5.2",
     "uuid": "^3.3.2"
   }
diff --git a/mqttClient/yarn.lock b/mqttClient/yarn.lock
index ac24ba7..d5de733 100644
--- a/mqttClient/yarn.lock
+++ b/mqttClient/yarn.lock
@@ -87,6 +87,11 @@ d@1:
     es5-ext "^0.10.50"
     type "^1.0.1"
 
+data-uri-to-buffer@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/data-uri-to-buffer/-/data-uri-to-buffer-4.0.0.tgz#b5db46aea50f6176428ac05b73be39a57701a64b"
+  integrity sha512-Vr3mLBA8qWmcuschSLAOogKgQ/Jwxulv3RNE4FXnYWRGujzrRWQI4m12fQqRkwX06C0KanhLr4hK+GydchZsaA==
+
 duplexify@^3.5.1, duplexify@^3.6.0:
   version "3.7.1"
   resolved "https://registry.yarnpkg.com/duplexify/-/duplexify-3.7.1.tgz#2a4df5317f6ccfd91f86d6fd25d8d8a103b88309"
@@ -166,6 +171,21 @@ extend@^3.0.0:
   resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.2.tgz#f8b1136b4071fbd8eb140aff858b1019ec2915fa"
   integrity sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g==
 
+fetch-blob@^3.1.2, fetch-blob@^3.1.3:
+  version "3.1.4"
+  resolved "https://registry.yarnpkg.com/fetch-blob/-/fetch-blob-3.1.4.tgz#e8c6567f80ad7fc22fd302e7dcb72bafde9c1717"
+  integrity sha512-Eq5Xv5+VlSrYWEqKrusxY1C3Hm/hjeAsCGVG3ft7pZahlUAChpGZT/Ms1WmSLnEAisEXszjzu/s+ce6HZB2VHA==
+  dependencies:
+    node-domexception "^1.0.0"
+    web-streams-polyfill "^3.0.3"
+
+formdata-polyfill@^4.0.10:
+  version "4.0.10"
+  resolved "https://registry.yarnpkg.com/formdata-polyfill/-/formdata-polyfill-4.0.10.tgz#24807c31c9d402e002ab3d8c720144ceb8848423"
+  integrity sha512-buewHzMvYL29jdeQTVILecSaZKnt/RJWjoZCF5OW60Z67/GmSLBkOFM7qh1PI3zFNtJbaZL5eQu1vLfazOwj4g==
+  dependencies:
+    fetch-blob "^3.1.2"
+
 fs.realpath@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
@@ -337,10 +357,19 @@ 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-domexception@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/node-domexception/-/node-domexception-1.0.0.tgz#6888db46a1f71c0b76b3f7555016b63fe64766e5"
+  integrity sha512-/jKZoMpw0F8GRwl4/eLROPA3cfcXtLApP0QzLmUT/HuPCZWyB7IY9ZrMeKw2O/nFIqPQB3PVM9aYm0F312AXDQ==
+
+node-fetch@^3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-3.1.1.tgz#d0d9607e455b3087e3092b821b5b1f1ebf4c2147"
+  integrity sha512-SMk+vKgU77PYotRdWzqZGTZeuFKlsJ0hu4KPviQKkfY+N3vn2MIzr0rvpnYpR8MtB3IEuhlEcuOLbGvLRlA+yg==
+  dependencies:
+    data-uri-to-buffer "^4.0.0"
+    fetch-blob "^3.1.3"
+    formdata-polyfill "^4.0.10"
 
 once@^1.3.0, once@^1.3.1, once@^1.4.0:
   version "1.4.0"
@@ -526,6 +555,11 @@ uuid@^3.3.2:
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.3.2.tgz#1b4af4955eb3077c501c23872fc6513811587131"
   integrity sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA==
 
+web-streams-polyfill@^3.0.3:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/web-streams-polyfill/-/web-streams-polyfill-3.2.0.tgz#a6b74026b38e4885869fb5c589e90b95ccfc7965"
+  integrity sha512-EqPmREeOzttaLRm5HS7io98goBgZ7IVz79aDvqjD0kYXLtFZTc0T/U6wHTPKyIjb+MdN7DFIIX6hgdBEpWmfPA==
+
 websocket-stream@^5.1.2:
   version "5.5.0"
   resolved "https://registry.yarnpkg.com/websocket-stream/-/websocket-stream-5.5.0.tgz#9827f2846fc0d2b4dca7aab8f92980b2548b868e"