diff --git a/lib/core/renderer.js b/lib/core/renderer.js
index 16187ff93e..c7428b71be 100644
--- a/lib/core/renderer.js
+++ b/lib/core/renderer.js
@@ -226,7 +226,7 @@ module.exports = class Renderer {
     const _this = this
     if (this.options.debug && this.options.dev) {
       this.useMiddleware({
-        path: '_open',
+        path: '__open-in-editor',
         handler(req, res) {
           // Lazy load open-in-editor
           const openInEditor = require('open-in-editor')
diff --git a/package.json b/package.json
index e4d4d733c6..e121316de2 100644
--- a/package.json
+++ b/package.json
@@ -56,7 +56,7 @@
     "npm": ">=5.0.0"
   },
   "dependencies": {
-    "@nuxtjs/youch": "^3.1.0",
+    "@nuxtjs/youch": "^4.0.0",
     "ansi-html": "^0.0.7",
     "autoprefixer": "^7.2.3",
     "babel-core": "^6.26.0",
diff --git a/test/debug.test.js b/test/debug.test.js
index 3a1ccf3ea6..a60b3c6cf8 100644
--- a/test/debug.test.js
+++ b/test/debug.test.js
@@ -25,18 +25,18 @@ test.serial('Init Nuxt.js', async t => {
   t.true(logSpy.calledWithMatch('OPEN'))
 })
 
-test.serial('/test/_open (open-in-editor)', async t => {
+test.serial('/test/__open-in-editor (open-in-editor)', async t => {
   const logSpy = await interceptLog()
-  const { body } = await rp(url('/test/_open?file=pages/index.vue'), { resolveWithFullResponse: true })
+  const { body } = await rp(url('/test/__open-in-editor?file=pages/index.vue'), { resolveWithFullResponse: true })
   t.is(body, 'opened in editor!')
   release()
   t.is(logSpy.getCall(0).args[0], '[open in editor]')
   t.true(logSpy.calledOnce)
 })
 
-test.serial('/test/_open should return error (open-in-editor)', async t => {
+test.serial('/test/__open-in-editor should return error (open-in-editor)', async t => {
   const logSpy = await interceptLog()
-  const { body } = await rp(url('/test/_open?file='), { resolveWithFullResponse: true })
+  const { body } = await rp(url('/test/__open-in-editor?file='), { resolveWithFullResponse: true })
   t.is(body, 'File is not specified')
   release()
   t.is(logSpy.getCall(0).args[0], '[open in editor]')
diff --git a/test/fixtures/debug/nuxt.config.js b/test/fixtures/debug/nuxt.config.js
index 8de5df3d80..3f41a73c62 100644
--- a/test/fixtures/debug/nuxt.config.js
+++ b/test/fixtures/debug/nuxt.config.js
@@ -2,7 +2,7 @@ module.exports = {
   router: {
     base: '/test/'
   },
-  dev: true, // Needed for _open middleware
+  dev: true, // Needed for __open-in-editor middleware
   debug: true,
   editor: {
     cmd: 'echo',
diff --git a/yarn.lock b/yarn.lock
index f8ded0467f..3479e92e13 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -97,9 +97,9 @@
   dependencies:
     arrify "^1.0.1"
 
-"@nuxtjs/youch@^3.1.0":
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/@nuxtjs/youch/-/youch-3.1.0.tgz#0e4f38d1b9ede2a77b121c02cbd839937e8918ad"
+"@nuxtjs/youch@^4.0.0":
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/@nuxtjs/youch/-/youch-4.0.0.tgz#74eb880f57a3f76f7684f69ba2753a815f308deb"
   dependencies:
     cookie "^0.3.1"
     mustache "^2.3.0"