diff --git a/elements/heatmap.js b/elements/heatmap.js
index 8f79832..7e34bb7 100644
--- a/elements/heatmap.js
+++ b/elements/heatmap.js
@@ -15,6 +15,7 @@ class Heatmap extends Component {
     width: props.number,
     height: props.number,
   };
+
   connected() {
     if (!this.timeseries) {
       return;
@@ -30,6 +31,7 @@ class Heatmap extends Component {
         this.data = values;
       });
   }
+
   renderer(renderRoot, render) {
     const root = renderRoot;
     while (root.firstChild) {
diff --git a/package.json b/package.json
index 7b83595..8ccecc7 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "babel-loader": "^8.0.0-beta.0",
     "babel-plugin-transform-class-properties": "^6.24.1",
     "copy-webpack-plugin": "^4.6.0",
-    "eslint": "^4.12.0",
+    "eslint": "^5.0.1",
     "eslint-config-airbnb-base": "^13.0.0",
     "eslint-plugin-import": "^2.8.0",
     "msgflo-nodejs": "^0.11.1",