diff --git a/types/assets-webpack-plugin/assets-webpack-plugin-tests.ts b/types/assets-webpack-plugin/assets-webpack-plugin-tests.ts
index b02c707d81..838ac825ea 100644
--- a/types/assets-webpack-plugin/assets-webpack-plugin-tests.ts
+++ b/types/assets-webpack-plugin/assets-webpack-plugin-tests.ts
@@ -8,15 +8,21 @@ const config: webpack.Configuration = {
             filename: 'assets.json'
         }),
         new AssetsPlugin({
+            entrypoints: true,
             filename: 'assets.json',
             fullPath: false,
+            fileTypes: ['css'],
             includeManifest: true,
+            includeAllFileTypes: false,
+            keepInMemory: true,
+            manifestFirst: true,
             path: '/foo/bar',
             prettyPrint: true,
             processOutput: (assets) => (
                 'window.assets = ' + JSON.stringify(assets)
             ),
             update: true,
+            useCompilerPath: true,
             metadata: {
                 meta: 'data'
             },
diff --git a/types/assets-webpack-plugin/index.d.ts b/types/assets-webpack-plugin/index.d.ts
index 63563d6298..397002add3 100644
--- a/types/assets-webpack-plugin/index.d.ts
+++ b/types/assets-webpack-plugin/index.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for assets-webpack-plugin 3.5
+// Type definitions for assets-webpack-plugin 3.9
 // Project: https://github.com/ztoben/assets-webpack-plugin
 // Definitions by: Michael Strobel <https://github.com/kryops>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
@@ -16,18 +16,36 @@ declare namespace AssetsWebpackPlugin {
     type ProcessOutputFn = (assets: Assets) => string;
 
     interface Options {
+        /**
+         * If the "entrypoints" option is given, the output will be limited to the entrypoints and the chunks associated with them.
+         * false by default
+         */
+        entrypoints?: boolean;
+
         /**
          * Name for the created json file.
          * "webpack-assets.json" by default
          */
         filename?: string;
 
+        /**
+         * When set and "includeAllFileTypes" is set false, only assets matching these types will be included in the assets file.
+         * ['js', 'css'] by default
+         */
+        fileTypes?: string[];
+
         /**
          * If false the output will not include the full path of the generated file.
          * true by default
          */
         fullPath?: boolean;
 
+        /**
+         * When set false, falls back to the "fileTypes" option array to decide which file types to include in the assets file.
+         * true by default
+         */
+        includeAllFileTypes?: boolean;
+
         /**
          * Inserts the manifest javascript as a text property in your assets.
          * Accepts the name of your manifest chunk.
@@ -38,6 +56,19 @@ declare namespace AssetsWebpackPlugin {
          */
         includeManifest?: boolean;
 
+        /**
+         * When set the assets file will only be generated in memory while running webpack-dev-server and not written to disk.
+         * false by default
+         */
+        keepInMemory?: boolean;
+
+        /**
+         * Orders the assets output so that manifest is the first entry.
+         * This is useful for cases where script tags are generated from the assets json output, and order of import is important.
+         * false by default
+         */
+        manifestFirst?: boolean;
+
         /**
          * Inject metadata into the output file. All values will be injected into the key "metadata"
          */
@@ -66,6 +97,12 @@ declare namespace AssetsWebpackPlugin {
          * false by default
          */
         update?: boolean;
+
+        /**
+         * Will override the path to use the compiler output path set in your webpack config.
+         * false by default
+         */
+        useCompilerPath?: boolean;
     }
 }