diff --git a/types/case-sensitive-paths-webpack-plugin/index.d.ts b/types/case-sensitive-paths-webpack-plugin/index.d.ts
index 360d3d6d08..38fdd9c032 100644
--- a/types/case-sensitive-paths-webpack-plugin/index.d.ts
+++ b/types/case-sensitive-paths-webpack-plugin/index.d.ts
@@ -2,6 +2,7 @@
 // Project: https://github.com/Urthen/case-sensitive-paths-webpack-plugin#readme
 // Definitions by: Andrew Makarov <https://github.com/r3nya>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
 
 import { Plugin } from 'webpack';
 
diff --git a/types/clean-webpack-plugin/index.d.ts b/types/clean-webpack-plugin/index.d.ts
index 7fc45cc3e4..afe8a65b69 100644
--- a/types/clean-webpack-plugin/index.d.ts
+++ b/types/clean-webpack-plugin/index.d.ts
@@ -2,6 +2,7 @@
 // Project: https://github.com/johnagan/clean-webpack-plugin
 // Definitions by: Jed Fox <https://github.com/j-f1>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
 
 import { Plugin } from 'webpack';
 
diff --git a/types/compression-webpack-plugin/index.d.ts b/types/compression-webpack-plugin/index.d.ts
index 8fddd72daf..bfb769ed2f 100644
--- a/types/compression-webpack-plugin/index.d.ts
+++ b/types/compression-webpack-plugin/index.d.ts
@@ -2,6 +2,7 @@
 // Project: https://github.com/webpack-contrib/compression-webpack-plugin
 // Definitions by: Anton Kandybo <https://github.com/dublicator>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
 
 import { Plugin } from 'webpack';
 
diff --git a/types/copy-webpack-plugin/index.d.ts b/types/copy-webpack-plugin/index.d.ts
index 8bfae1e0ed..1190adcf91 100644
--- a/types/copy-webpack-plugin/index.d.ts
+++ b/types/copy-webpack-plugin/index.d.ts
@@ -2,6 +2,7 @@
 // Project: https://github.com/kevlened/copy-webpack-plugin
 // Definitions by: flying-sheep <https://github.com/flying-sheep>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
 
 import { Plugin } from 'webpack'
 import { IOptions } from 'minimatch'
@@ -30,7 +31,7 @@ interface CopyPattern {
 	context?: string
 	/**
 	 * Removes all directory references and only copies file names.
-	 * 
+	 *
 	 * If files have the same name, the result is non-deterministic. (default: `false`)
 	 */
 	flatten?: boolean
diff --git a/types/duplicate-package-checker-webpack-plugin/index.d.ts b/types/duplicate-package-checker-webpack-plugin/index.d.ts
index 88d8ccd54c..fd2906aa46 100644
--- a/types/duplicate-package-checker-webpack-plugin/index.d.ts
+++ b/types/duplicate-package-checker-webpack-plugin/index.d.ts
@@ -2,12 +2,13 @@
 // Project: https://github.com/darrenscerri/duplicate-package-checker-webpack-plugin#readme
 // Definitions by: Matt Traynham <https://github.com/mtraynham>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
 
-import webpack = require('webpack');
+import { Plugin } from 'webpack';
 
 export = DuplicatePackageCheckerWebpackPlugin;
 
-declare class DuplicatePackageCheckerWebpackPlugin extends webpack.Plugin {
+declare class DuplicatePackageCheckerWebpackPlugin extends Plugin {
     constructor(options?: DuplicatePackageCheckerWebpackPlugin.Options);
 }
 
diff --git a/types/extract-text-webpack-plugin/index.d.ts b/types/extract-text-webpack-plugin/index.d.ts
index 962698568a..85d41b4619 100644
--- a/types/extract-text-webpack-plugin/index.d.ts
+++ b/types/extract-text-webpack-plugin/index.d.ts
@@ -2,8 +2,9 @@
 // Project: https://github.com/webpack-contrib/extract-text-webpack-plugin
 // Definitions by: flying-sheep <https://github.com/flying-sheep>, kayo <https://github.com/katyo>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
 
-import webpack = require('webpack');
+import { Plugin, NewLoader, OldLoader} from 'webpack';
 
 export = ExtractTextPlugin;
 
@@ -11,13 +12,13 @@ export = ExtractTextPlugin;
  * extract-text-webpack-plugin has no support for .options instead of .query yet.
  * See https://github.com/webpack/extract-text-webpack-plugin/issues/281
  */
-type Loader = string | webpack.OldLoader | webpack.NewLoader;
+type Loader = string | OldLoader | NewLoader;
 
 /**
  * Use an `ExtractTextPlugin` instance and a loader returned by `extract` in concert to write files to disk instead of loading them into others.
  * Usage example at https://github.com/webpack/extract-text-webpack-plugin#usage-example-with-css
  */
-declare class ExtractTextPlugin extends webpack.Plugin {
+declare class ExtractTextPlugin extends Plugin {
     /** Create a plugin instance defining the extraction target file(s) for the files loaded by `extract` */
     constructor(options: string | ExtractTextPlugin.PluginOptions);
     /**
diff --git a/types/html-webpack-plugin/index.d.ts b/types/html-webpack-plugin/index.d.ts
index dc23e020d7..35774c1ac6 100644
--- a/types/html-webpack-plugin/index.d.ts
+++ b/types/html-webpack-plugin/index.d.ts
@@ -4,6 +4,7 @@
 //                 Benjamin Lim <https://github.com/bumbleblym>
 //                 Tomek Łaziuk <https://github.com/tlaziuk>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
 
 import { Plugin } from 'webpack';
 import { Options as HtmlMinifierOptions } from 'html-minifier';
diff --git a/types/lodash-webpack-plugin/index.d.ts b/types/lodash-webpack-plugin/index.d.ts
index 7b2c3ebe67..e7e2dfd4db 100644
--- a/types/lodash-webpack-plugin/index.d.ts
+++ b/types/lodash-webpack-plugin/index.d.ts
@@ -2,6 +2,7 @@
 // Project: https://github.com/lodash/lodash-webpack-plugin#readme
 // Definitions by: Benjamin Lim <https://github.com/bumbleblym>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
 
 import { Plugin } from 'webpack';
 
diff --git a/types/optimize-css-assets-webpack-plugin/index.d.ts b/types/optimize-css-assets-webpack-plugin/index.d.ts
index b16d384d72..788b2e6a1f 100644
--- a/types/optimize-css-assets-webpack-plugin/index.d.ts
+++ b/types/optimize-css-assets-webpack-plugin/index.d.ts
@@ -2,6 +2,7 @@
 // Project: https://github.com/NMFR/optimize-css-assets-webpack-plugin
 // Definitions by: Armando Meziat <https://github.com/odnamrataizem>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
 
 import { Plugin } from 'webpack';
 
diff --git a/types/webpack-bundle-analyzer/index.d.ts b/types/webpack-bundle-analyzer/index.d.ts
index c563a9e3cf..3f856a7328 100644
--- a/types/webpack-bundle-analyzer/index.d.ts
+++ b/types/webpack-bundle-analyzer/index.d.ts
@@ -2,6 +2,7 @@
 // Project: https://github.com/th0r/webpack-bundle-analyzer
 // Definitions by: Michael Strobel <https://github.com/kryops>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
 
 import * as webpack from 'webpack';
 
diff --git a/types/webpack-chain/index.d.ts b/types/webpack-chain/index.d.ts
index 6f6c46daa8..05aa4e5845 100644
--- a/types/webpack-chain/index.d.ts
+++ b/types/webpack-chain/index.d.ts
@@ -2,6 +2,7 @@
 // Project: https://github.com/mozilla-neutrino/webpack-chain
 // Definitions by: Eirikur Nilsson <https://github.com/eirikurn>, Paul Sachs <https://github.com/psachs21>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
 
 import * as webpack from 'webpack';
 import * as https from 'https';
diff --git a/types/webpack-chunk-hash/index.d.ts b/types/webpack-chunk-hash/index.d.ts
index dc8f697a44..f499a00dc9 100644
--- a/types/webpack-chunk-hash/index.d.ts
+++ b/types/webpack-chunk-hash/index.d.ts
@@ -2,12 +2,13 @@
 // Project: https://github.com/alexindigo/webpack-chunk-hash#readme
 // Definitions by: Matt Traynham <https://github.com/mtraynham>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
 
-import webpack = require('webpack');
+import { Plugin } from 'webpack';
 
 export = WebpackChunkHash;
 
-declare class WebpackChunkHash extends webpack.Plugin {
+declare class WebpackChunkHash extends Plugin {
     constructor(options?: WebpackChunkHash.Options);
 }
 
diff --git a/types/webpack-cleanup-plugin/index.d.ts b/types/webpack-cleanup-plugin/index.d.ts
index f5fa620413..a6efd31af7 100644
--- a/types/webpack-cleanup-plugin/index.d.ts
+++ b/types/webpack-cleanup-plugin/index.d.ts
@@ -2,12 +2,12 @@
 // Project: https://github.com/gpbl/webpack-cleanup-plugin#readme
 // Definitions by: Luka Maljic <https://github.com/malj>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
 
-import webpack = require('webpack');
-
+import { Plugin } from 'webpack';
 export = WebpackCleanupPlugin;
 
-declare class WebpackCleanupPlugin extends webpack.Plugin {
+declare class WebpackCleanupPlugin extends Plugin {
     constructor(options?: WebpackCleanupPlugin.Options);
 }
 
diff --git a/types/webpack-dotenv-plugin/index.d.ts b/types/webpack-dotenv-plugin/index.d.ts
index 4200c3b15e..b8cfb33ef8 100644
--- a/types/webpack-dotenv-plugin/index.d.ts
+++ b/types/webpack-dotenv-plugin/index.d.ts
@@ -2,6 +2,7 @@
 // Project: https://github.com/nwinch/webpack-dotenv-plugin#readme
 // Definitions by: Michael Strobel <https://github.com/kryops>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
 
 import * as webpack from 'webpack';
 
diff --git a/types/webpack-merge/index.d.ts b/types/webpack-merge/index.d.ts
index 54c94a738e..17b39a4f06 100644
--- a/types/webpack-merge/index.d.ts
+++ b/types/webpack-merge/index.d.ts
@@ -4,7 +4,7 @@
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.2
 
-import webpack = require('webpack');
+import { Configuration } from 'webpack';
 
 export = webpackMerge;
 
@@ -24,7 +24,7 @@ declare namespace webpackMerge {
     type MergeStrategy = 'prepend' | 'append' | 'replace';
 
     interface WebpackMerge {
-        (...configs: webpack.Configuration[]): webpack.Configuration;
+        (...configs: Configuration[]): Configuration;
         (customizeOptions: CustomizeOptions): ConfigurationMergeFunction;
         unique: UniqueFunction;
         smart: ConfigurationMergeFunction;
diff --git a/types/webpack-node-externals/index.d.ts b/types/webpack-node-externals/index.d.ts
index 80dc73b27b..c93d3edecf 100644
--- a/types/webpack-node-externals/index.d.ts
+++ b/types/webpack-node-externals/index.d.ts
@@ -2,12 +2,13 @@
 // Project: https://github.com/liady/webpack-node-externals
 // Definitions by: Matt Traynham <https://github.com/mtraynham>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
 
-import webpack = require('webpack');
+import { ExternalsFunctionElement } from 'webpack';
 
 export = webpackNodeExternals;
 
-declare function webpackNodeExternals(options?: webpackNodeExternals.Options): webpack.ExternalsFunctionElement;
+declare function webpackNodeExternals(options?: webpackNodeExternals.Options): ExternalsFunctionElement;
 
 declare namespace webpackNodeExternals {
     type WhitelistOption = string | RegExp;
diff --git a/types/webpack-notifier/index.d.ts b/types/webpack-notifier/index.d.ts
index 1b8e92651f..372b4f2b1c 100644
--- a/types/webpack-notifier/index.d.ts
+++ b/types/webpack-notifier/index.d.ts
@@ -2,6 +2,7 @@
 // Project: https://github.com/Turbo87/webpack-notifier#readme
 // Definitions by: Benjamin Lim <https://github.com/bumbleblym>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
 
 import { Plugin } from 'webpack';
 
diff --git a/types/webpack-stream/index.d.ts b/types/webpack-stream/index.d.ts
index 41fbb3592b..19159f402d 100644
--- a/types/webpack-stream/index.d.ts
+++ b/types/webpack-stream/index.d.ts
@@ -2,6 +2,7 @@
 // Project: https://github.com/shama/webpack-stream
 // Definitions by: Ian Clanton-Thuon <https://github.com/iclanton>, Benjamin Lim <https://github.com/bumbleblym>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
 
 /// <reference types="node" />
 
diff --git a/types/webpack-validator/index.d.ts b/types/webpack-validator/index.d.ts
index 4b6b260877..242a71e6f4 100644
--- a/types/webpack-validator/index.d.ts
+++ b/types/webpack-validator/index.d.ts
@@ -2,6 +2,7 @@
 // Project: https://github.com/js-dxtools/webpack-validator
 // Definitions by: Simon Hartcher <https://github.com/deevus>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
 
 ///<reference types="webpack" />
 
diff --git a/types/webpack/index.d.ts b/types/webpack/index.d.ts
index f8aa375210..e25adc7e7d 100644
--- a/types/webpack/index.d.ts
+++ b/types/webpack/index.d.ts
@@ -10,6 +10,7 @@
 //                 Alan Agius <https://github.com/alan-agius4>
 //                 Spencer Elliott <https://github.com/elliottsj>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
 
 /// <reference types="node" />
 
@@ -76,7 +77,7 @@ declare namespace webpack {
         /** Capture timing information for each module. */
         profile?: boolean;
         /** Cache generated modules and chunks to improve performance for multiple incremental builds. */
-        cache?: boolean | any;
+        cache?: boolean | object;
         /** Enter watch mode, which rebuilds on file change. */
         watch?: boolean;
         watchOptions?: Options.WatchOptions;
@@ -1029,7 +1030,7 @@ declare namespace webpack {
              * If a loader delivers a result in the pitch method the process turns around and skips the remaining loaders,
              * continuing with the calls to the more left loaders. data can be passed between pitch and normal call.
              */
-            pitch?(remainingRequest: string, precedingRequest: string, data: any): any | undefined;
+            pitch?(remainingRequest: string, precedingRequest: string, data: any): any;
 
             /**
              * By default, the resource file is treated as utf-8 string and passed as String to the loader.
diff --git a/types/webpack/tslint.json b/types/webpack/tslint.json
index 590af11d7e..9d2d6ce987 100644
--- a/types/webpack/tslint.json
+++ b/types/webpack/tslint.json
@@ -2,7 +2,6 @@
 	"extends": "dtslint/dt.json",
 	"rules": {
 		// TODO
-		"no-any-union": false,
 		"no-unnecessary-qualifier": false,
 		"no-void-expression": false,
 		"space-within-parens": false