diff --git a/.babelrc b/.babelrc
index c13c5f6..002b4aa 100644
--- a/.babelrc
+++ b/.babelrc
@@ -1,3 +1,3 @@
 {
-  "presets": ["es2015"]
+  "presets": ["env"]
 }
diff --git a/package.json b/package.json
index 285f55e..a8910f3 100644
--- a/package.json
+++ b/package.json
@@ -61,7 +61,7 @@
     "babel-core": "^6.24.0",
     "babel-plugin-external-helpers": "^6.22.0",
     "babel-plugin-transform-inline-environment-variables": "6.8.0",
-    "babel-preset-es2015": "^6.24.0",
+    "babel-preset-env": "^1.6.0",
     "chai": "3.5.0",
     "codecov": "1.0.1",
     "eslint": "^3.19.0",
@@ -83,6 +83,6 @@
     "sinon": "^1.17.7"
   },
   "dependencies": {
-    "deep-diff": "^0.3.5"
+    "deep-diff": "0.3.5"
   }
 }
diff --git a/rollup.config.js b/rollup.config.js
index a18a65b..7db0b27 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -14,7 +14,7 @@ export default {
       babelrc: false,
       presets: [
         [
-          'es2015',
+          'env',
           {
             modules: false,
           },
diff --git a/src/core.js b/src/core.js
index caee13d..27d6776 100644
--- a/src/core.js
+++ b/src/core.js
@@ -126,7 +126,7 @@ function printBuffer(buffer, options) {
     }
 
     if (logger.withTrace) {
-      logger.groupCollapsed(`TRACE`);
+      logger.groupCollapsed('TRACE');
       logger.trace();
       logger.groupEnd();
     }