diff --git a/webservice/ui/package.json b/webservice/ui/package.json
index a289211..8a635e5 100644
--- a/webservice/ui/package.json
+++ b/webservice/ui/package.json
@@ -53,7 +53,7 @@
     "webpack-merge": "^4.1.0"
   },
   "dependencies": {
-    "chart.js": "^2.7.0",
+    "chart.js": "^2.9.4",
     "classnames": "^2.2.5",
     "moment": "^2.18.1",
     "mqtt": "^2.13.0",
diff --git a/webservice/ui/yarn.lock b/webservice/ui/yarn.lock
index 55aec7c..88e64b5 100644
--- a/webservice/ui/yarn.lock
+++ b/webservice/ui/yarn.lock
@@ -1691,10 +1691,10 @@ chalk@^2.4.1, chalk@^2.4.2:
     escape-string-regexp "^1.0.5"
     supports-color "^5.3.0"
 
-chart.js@^2.7.0:
-  version "2.9.3"
-  resolved "https://registry.yarnpkg.com/chart.js/-/chart.js-2.9.3.tgz#ae3884114dafd381bc600f5b35a189138aac1ef7"
-  integrity sha512-+2jlOobSk52c1VU6fzkh3UwqHMdSlgH1xFv9FKMqHiNCpXsGPQa/+81AFa+i3jZ253Mq9aAycPwDjnn1XbRNNw==
+chart.js@^2.9.4:
+  version "2.9.4"
+  resolved "https://registry.yarnpkg.com/chart.js/-/chart.js-2.9.4.tgz#0827f9563faffb2dc5c06562f8eb10337d5b9684"
+  integrity sha512-B07aAzxcrikjAPyV+01j7BmOpxtQETxTSlQ26BEYJ+3iUkbNKaOJ/nDbT6JjyqYxseM0ON12COHYdU2cTIjC7A==
   dependencies:
     chartjs-color "^2.1.0"
     moment "^2.10.2"