fs-extra@8 update in devDependencies
diff --git a/package.json b/package.json
index 157f39b..d43c55c 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
     "eslint-plugin-node": "^8.0.1",
     "eslint-plugin-promise": "^4.0.1",
     "eslint-plugin-standard": "^4.0.0",
-    "fs-extra": "^7.0.1",
+    "fs-extra": "^8.1.0",
     "jasmine": "3.1.0",
     "nyc": "^13.1.0",
     "rewire": "^4.0.1"