diff --git a/package.json b/package.json
index 090f429..add57cb 100644
--- a/package.json
+++ b/package.json
@@ -29,12 +29,12 @@
     "babel-cli": "^6.24.1",
     "babel-core": "^6.24.1",
     "babel-preset-es2015": "^6.24.1",
-    "coveralls": "^2.13.0",
-    "esdoc": "^0.5.2",
-    "eslint": "^3.19.0",
+    "coveralls": "^3.0.0",
+    "esdoc": "^1.0.3",
+    "eslint": "^4.9.0",
     "istanbul": "^1.0.0-alpha.2",
-    "mocha": "^3.2.0",
-    "should": "^11.2.1"
+    "mocha": "^4.0.1",
+    "should": "^13.1.2"
   },
   "jsnext:main": "src/index.js"
 }