diff --git a/__test__/index.test.js b/__test__/index.test.js
index b0432e0..d1f8476 100644
--- a/__test__/index.test.js
+++ b/__test__/index.test.js
@@ -8,13 +8,13 @@ const delay = require('delay');
 
 const qute = require('../index');
 
-const utils = require('./__utils__');
-
-const WAITING = utils.WAITING;
-const RUNNING = utils.RUNNING;
-const RESOLVED = utils.RESOLVED;
-const REJECTED = utils.REJECTED;
-const deferred = utils.deferred;
+const {
+  WAITING,
+  RUNNING,
+  RESOLVED,
+  REJECTED,
+  deferred,
+} = require('./__utils__');
 
 // private variables
 
diff --git a/package.json b/package.json
index d9a6c4d..ab66730 100644
--- a/package.json
+++ b/package.json
@@ -21,16 +21,16 @@
     "any-promise": "~1.3.0"
   },
   "devDependencies": {
-    "babel-jest": "~17.0.2",
-    "babel-polyfill": "~6.16.0",
-    "babel-preset-latest": "~6.16.0",
+    "babel-jest": "~18.0.0",
+    "babel-polyfill": "~6.22.0",
+    "babel-preset-latest": "~6.22.0",
     "coveralls": "~2.11.14",
     "delay": "~1.3.1",
-    "eslint": "~3.10.2",
-    "eslint-config-muriki": "~7.0.0",
+    "eslint": "~3.14.1",
+    "eslint-config-muriki": "~8.1.4",
     "eslint-plugin-import": "~2.2.0",
-    "eslint-plugin-jasmine": "~2.1.0",
-    "eslint-plugin-node": "~3.0.3",
-    "jest": "~17.0.3"
+    "eslint-plugin-jasmine": "~2.2.0",
+    "eslint-plugin-node": "~3.0.5",
+    "jest": "~18.1.0"
   }
 }