diff --git a/lib/utils.js b/lib/utils.js
index f3260633..bb972417 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -43,6 +43,7 @@ var arrayToObject = function arrayToObject(source, options) {
 };
 
 var merge = function merge(target, source, options) {
+    /* eslint no-param-reassign: 0 */
     if (!source) {
         return target;
     }
diff --git a/package.json b/package.json
index 57896e8a..e4fc3504 100644
--- a/package.json
+++ b/package.json
@@ -28,11 +28,11 @@
     },
     "dependencies": {},
     "devDependencies": {
-        "@ljharb/eslint-config": "^14.1.0",
+        "@ljharb/eslint-config": "^15.0.0",
         "browserify": "^16.5.0",
         "covert": "^1.1.1",
         "eclint": "^2.8.1",
-        "eslint": "^6.4.0",
+        "eslint": "^6.6.0",
         "evalmd": "^0.0.19",
         "for-each": "^0.3.3",
         "has-symbols": "^1.0.0",