diff --git a/.eslintrc.json b/.eslintrc.json
index 4572422..eaa27d8 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -23,6 +23,7 @@
                 "ignoredNodes": [ "JSXAttribute" ]
             }],
         "newline-per-chained-call": ["error", { "ignoreChainWithDepth": 2 }],
+        "no-var": "error",
         "lines-between-class-members": ["error", "always", { "exceptAfterSingleLine": true }],
         "prefer-promise-reject-errors": ["error", { "allowEmptyReject": true }],
         "react/jsx-indent": ["error", 4],