diff --git a/.eslintrc.json b/.eslintrc.json
index c0a798ad..eeb60e8d 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -94,6 +94,7 @@
         "no-restricted-properties": "error",
         "no-restricted-syntax": "error",
         "no-return-assign": "error",
+        "no-return-await": "error",
         "no-script-url": "error",
         "no-self-assign": "error",
         "no-self-compare": "error",
diff --git a/.gitignore b/.gitignore
index a918cfbb..be66664c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@ demo/markdownlint-browser.js
 demo/markdownlint-browser.min.js
 node_modules
 npm-debug.log
+.vscode
diff --git a/package.json b/package.json
index 8b8b4d60..b6bb71ae 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
   "devDependencies": {
     "browserify": "^13.1.1",
     "cpy-cli": "^1.0.1",
-    "eslint": "^3.9.1",
+    "eslint": "^3.10.0",
     "glob": "^7.1.1",
     "istanbul": "^0.4.5",
     "nodeunit": "^0.10.2",