diff --git a/test/fixtures/configured-bin.js b/test/fixtures/configured-bin.js
deleted file mode 100755
index c68226ee7..000000000
--- a/test/fixtures/configured-bin.js
+++ /dev/null
@@ -1,7 +0,0 @@
-#!/usr/bin/env node
-var argv = require('./yargs/index.js')
-  .parserConfiguration({ 'dot-notation': true })
-  .help('help')
-  .version()
-  .argv
-console.log(argv)
diff --git a/test/fixtures/no-extension b/test/fixtures/no-extension
index 85c562007..9b2721f6b 100755
--- a/test/fixtures/no-extension
+++ b/test/fixtures/no-extension
@@ -4,4 +4,7 @@
 
 var parser = require('../../yargs.js')(process.argv.slice(2))
 
-console.log(parser.argv)
+console.log(parser.parserConfiguration({
+    'dot-notation': false,
+    'boolean-negation': false
+}).argv)
diff --git a/test/fixtures/no-require-main.js b/test/fixtures/no-require-main.js
index 3e46c8ba4..d415412cc 100755
--- a/test/fixtures/no-require-main.js
+++ b/test/fixtures/no-require-main.js
@@ -7,4 +7,7 @@ delete require.main
 
 var parser = require('../../yargs.js')(process.argv.slice(2), undefined, require)
 
-console.log(parser.argv)
+console.log(parser.parserConfiguration({
+  'dot-notation': false,
+  'boolean-negation': false
+}).argv)
diff --git a/test/fixtures/normal-bin.js b/test/fixtures/normal-bin.js
index 6ad4e38df..ae4d395ee 100755
--- a/test/fixtures/normal-bin.js
+++ b/test/fixtures/normal-bin.js
@@ -1,6 +1,10 @@
 #!/usr/bin/env node
-var argv = require('./yargs/index.js')
+var argv = require('../../index.js')
   .help('help')
   .version()
+  .parserConfiguration({
+    'dot-notation': false,
+    'boolean-negation': false
+  })
   .argv
 console.log(argv)
diff --git a/test/fixtures/package.json b/test/fixtures/package.json
index 7927de4df..da11cd033 100644
--- a/test/fixtures/package.json
+++ b/test/fixtures/package.json
@@ -3,8 +3,7 @@
   "repository": {
     "type": "svn"
   },
-  "yargs": {
-    "dot-notation": false,
-    "boolean-negation": false
+  "blerg": {
+    "dot-notation": false
   }
 }
diff --git a/test/fixtures/symlink-bin.js b/test/fixtures/symlink-bin.js
index 14b7de118..e6ce6b934 100755
--- a/test/fixtures/symlink-bin.js
+++ b/test/fixtures/symlink-bin.js
@@ -2,5 +2,9 @@
 var argv = require('./yargs-symlink/index.js')
   .help('help')
   .version()
+  .parserConfiguration({
+    'dot-notation': false,
+    'boolean-negation': false
+  })
   .argv
 console.log(argv)
diff --git a/test/integration.js b/test/integration.js
index dbe93e255..1f4d0b370 100644
--- a/test/integration.js
+++ b/test/integration.js
@@ -191,18 +191,6 @@ describe('integration tests', () => {
             return done()
           })
         })
-
-        it('is overridden by yargs.parserConfiguration', (done) => {
-          testCmd('./configured-bin.js', [ '--foo.bar', '--no-baz' ], (code, stdout) => {
-            if (code) {
-              return done(new Error(`cmd exited with code ${code}`))
-            }
-
-            stdout.should.not.match(/foo\.bar/)
-            stdout.should.match(/noBaz/)
-            return done()
-          })
-        })
       })
 
       after(() => {
diff --git a/test/yargs.js b/test/yargs.js
index 5ceb6f8e2..b5529f352 100644
--- a/test/yargs.js
+++ b/test/yargs.js
@@ -1678,7 +1678,7 @@ describe('yargs dsl tests', () => {
 
     it('allows an alternative cwd to be specified', () => {
       const argv = yargs('--foo a')
-        .pkgConf('yargs', './test/fixtures')
+        .pkgConf('blerg', './test/fixtures')
         .parse()
 
       argv.foo.should.equal('a')
diff --git a/yargs.js b/yargs.js
index 8280ae5aa..f2265bd9f 100644
--- a/yargs.js
+++ b/yargs.js
@@ -1,4 +1,5 @@
 'use strict'
+
 const argsert = require('./lib/argsert')
 const fs = require('fs')
 const Command = require('./lib/command')
@@ -603,7 +604,7 @@ function Yargs (processArgs, cwd, parentRequire) {
 
       const demand = opt.demand || opt.required || opt.require
 
-      // deprecated, use 'demandOption' instead
+      // A required option can be specified via "demand: true".
       if (demand) {
         self.demand(key, demand)
       }
@@ -1032,13 +1033,6 @@ function Yargs (processArgs, cwd, parentRequire) {
     options.__ = y18n.__
     options.configuration = self.getParserConfiguration()
 
-    // Deprecated
-    let pkgConfig = pkgUp()['yargs']
-    if (pkgConfig) {
-      console.warn('Configuring yargs through package.json is deprecated and will be removed in a future major release, please use the JS API instead.')
-      options.configuration = Object.assign({}, pkgConfig, options.configuration)
-    }
-
     const parsed = Parser.detailed(args, options)
     let argv = parsed.argv
     if (parseContext) argv = Object.assign({}, argv, parseContext)