diff --git a/babel.config.js b/babel.config.js
index 77d20451..4c9ccbc8 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -2,9 +2,7 @@ const MIN_BABEL_VERSION = 7;
 
 module.exports = (api) => {
   api.assertVersion(MIN_BABEL_VERSION);
-
-  const env = api.env();
-  const isTestEnv = env === 'test';
+  api.cache(true);
 
   return {
     presets: [
@@ -12,7 +10,7 @@ module.exports = (api) => {
         '@babel/preset-env',
         {
           targets: {
-            node: isTestEnv ? '6.9.0' : '4.8.0',
+            node: '6.9.0',
           },
         },
       ],
diff --git a/package-lock.json b/package-lock.json
index e31b029b..9f2db79f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2888,6 +2888,12 @@
           "requires": {
             "pify": "^3.0.0"
           }
+        },
+        "pify": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
+          "integrity": "sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY=",
+          "dev": true
         }
       }
     },
@@ -3694,14 +3700,6 @@
         "p-map": "^2.0.0",
         "pify": "^4.0.1",
         "rimraf": "^2.6.3"
-      },
-      "dependencies": {
-        "pify": {
-          "version": "4.0.1",
-          "resolved": "https://registry.npmjs.org/pify/-/pify-4.0.1.tgz",
-          "integrity": "sha512-uB80kBFb/tfd68bVleG9T5GGsGPjJrLAUpR5PZIrhBnIaRTQRjqdJSsIKkOP6OAIFbj7GOrcudc5pNjZ+geV2g==",
-          "dev": true
-        }
       }
     },
     "del-cli": {
@@ -3882,6 +3880,12 @@
             }
           }
         },
+        "pify": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
+          "integrity": "sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY=",
+          "dev": true
+        },
         "read-pkg": {
           "version": "1.1.0",
           "resolved": "https://registry.npmjs.org/read-pkg/-/read-pkg-1.1.0.tgz",
@@ -7728,6 +7732,12 @@
           "integrity": "sha512-r6zKACMNhjPJMTl8KcFH4li//gkrXWfbD6feV8l6doRHlzljFWGJ2AP6iKaCJXyZmAUMOPtvbW7EXkbWO/pLEA==",
           "dev": true
         },
+        "pify": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
+          "integrity": "sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY=",
+          "dev": true
+        },
         "resolve-from": {
           "version": "3.0.0",
           "resolved": "https://registry.npmjs.org/resolve-from/-/resolve-from-3.0.0.tgz",
@@ -7849,6 +7859,14 @@
         "parse-json": "^4.0.0",
         "pify": "^3.0.0",
         "strip-bom": "^3.0.0"
+      },
+      "dependencies": {
+        "pify": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
+          "integrity": "sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY=",
+          "dev": true
+        }
       }
     },
     "loader-runner": {
@@ -8010,14 +8028,6 @@
       "requires": {
         "pify": "^4.0.1",
         "semver": "^5.6.0"
-      },
-      "dependencies": {
-        "pify": {
-          "version": "4.0.1",
-          "resolved": "https://registry.npmjs.org/pify/-/pify-4.0.1.tgz",
-          "integrity": "sha512-uB80kBFb/tfd68bVleG9T5GGsGPjJrLAUpR5PZIrhBnIaRTQRjqdJSsIKkOP6OAIFbj7GOrcudc5pNjZ+geV2g==",
-          "dev": true
-        }
       }
     },
     "makeerror": {
@@ -8939,6 +8949,14 @@
       "dev": true,
       "requires": {
         "pify": "^3.0.0"
+      },
+      "dependencies": {
+        "pify": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
+          "integrity": "sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY=",
+          "dev": true
+        }
       }
     },
     "pbkdf2": {
@@ -8961,9 +8979,9 @@
       "dev": true
     },
     "pify": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
-      "integrity": "sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY="
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/pify/-/pify-4.0.1.tgz",
+      "integrity": "sha512-uB80kBFb/tfd68bVleG9T5GGsGPjJrLAUpR5PZIrhBnIaRTQRjqdJSsIKkOP6OAIFbj7GOrcudc5pNjZ+geV2g=="
     },
     "pinkie": {
       "version": "2.0.4",
diff --git a/package.json b/package.json
index 518e0054..483183d6 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
   "dependencies": {
     "clone": "^2.1.1",
     "loader-utils": "^1.1.0",
-    "pify": "^3.0.0"
+    "pify": "^4.0.1"
   },
   "devDependencies": {
     "@babel/cli": "^7.4.4",
@@ -70,6 +70,12 @@
     "webpack": "^4.30.0"
   },
   "keywords": [
-    "webpack"
+    "webpack",
+    "loader",
+    "less",
+    "lesscss",
+    "less.js",
+    "css",
+    "preprocessor"
   ]
 }