diff --git a/types/webpack/index.d.ts b/types/webpack/index.d.ts
index 9c9239e5ea..2277ec2867 100644
--- a/types/webpack/index.d.ts
+++ b/types/webpack/index.d.ts
@@ -134,7 +134,7 @@ declare namespace webpack {
     }
 
     interface Output {
-        /** The output directory as absolute path (required). */
+        /** The output directory as absolute path. */
         path?: string;
         /** The filename of the entry chunk as relative path inside the output.path directory. */
         filename?: string;
@@ -190,8 +190,14 @@ declare namespace webpack {
         sourcePrefix?: string;
         /** This option enables cross-origin loading of chunks. */
         crossOriginLoading?: string | boolean;
+        /** The encoding to use when generating the hash, defaults to 'hex' */
+        hashDigest?: 'hex' | 'latin1' | 'base64';
+        /** The prefix length of the hash digest to use, defaults to 20. */
+        hashDigestLength?: number;
         /** Algorithm used for generation the hash (see node.js crypto package) */
         hashFunction?: string | ((algorithm: string, options?: any) => any);
+        /** An optional salt to update the hash via Node.JS' hash.update. */
+        hashSalt?: string;
         /** An expression which is used to address the global object/scope in runtime code. */
         globalObject?: string;
     }
diff --git a/types/webpack/v3/index.d.ts b/types/webpack/v3/index.d.ts
index d6102808b6..7f943d4151 100644
--- a/types/webpack/v3/index.d.ts
+++ b/types/webpack/v3/index.d.ts
@@ -126,9 +126,9 @@ declare namespace webpack {
     }
 
     interface Output {
-        /** The output directory as absolute path (required). */
+        /** The output directory as absolute path */
         path?: string;
-        /** The filename of the entry chunk as relative path inside the output.path directory. */
+        /** (Required) The filename of the entry chunk as relative path inside the output.path directory. */
         filename?: string;
         /** The filename of non-entry chunks as relative path inside the output.path directory. */
         chunkFilename?: string;
@@ -182,6 +182,14 @@ declare namespace webpack {
         sourcePrefix?: string;
         /** This option enables cross-origin loading of chunks. */
         crossOriginLoading?: string | boolean;
+        /** The encoding to use when generating the hash, defaults to 'hex' */
+        hashDigest?: 'hex' | 'latin1' | 'base64';
+        /** The prefix length of the hash digest to use, defaults to 20. */
+        hashDigestLength?: number;
+        /** Algorithm used for generation the hash (see node.js crypto package) */
+        hashFunction?: string | ((algorithm: string, options?: any) => any);
+        /** An optional salt to update the hash via Node.JS' hash.update. */
+        hashSalt?: string;
     }
 
     interface BaseModule {
diff --git a/types/webpack/webpack-tests.ts b/types/webpack/webpack-tests.ts
index d6bd908357..8fe0ab1e4d 100644
--- a/types/webpack/webpack-tests.ts
+++ b/types/webpack/webpack-tests.ts
@@ -100,7 +100,9 @@ configuration = {
         path: path.join(__dirname, "assets", "[hash]"),
         publicPath: "assets/[hash]/",
         filename: "output.[hash].bundle.js",
-        chunkFilename: "[id].[hash].bundle.js"
+        chunkFilename: "[id].[hash].bundle.js",
+        hashFunction: 'sha256',
+        hashDigestLength: 64,
     }
 };