diff --git a/package.json b/package.json
index e172e29..1272b79 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
     "babel-preset-env": "^1.6.0",
     "chai": "^4.1.2",
     "coveralls": "^3.0.0",
-    "dotenv": "^4.0.0",
+    "dotenv": "^5.0.0",
     "eslint": "^4.8.0",
     "eslint-config-google": "^0.9.1",
     "mocha": "^4.0.1",