diff --git a/spec/fixtures/app/libEGL.dll b/spec/fixtures/app/libEGL.dll
deleted file mode 100644
index b3bcb032..00000000
Binary files a/spec/fixtures/app/libEGL.dll and /dev/null differ
diff --git a/spec/fixtures/app/libGLESv2.dll b/spec/fixtures/app/libGLESv2.dll
deleted file mode 100644
index 25e81dcc..00000000
Binary files a/spec/fixtures/app/libGLESv2.dll and /dev/null differ
diff --git a/spec/fixtures/app/swiftshader/libEGL.dll b/spec/fixtures/app/swiftshader/libEGL.dll
new file mode 100644
index 00000000..e69de29b
diff --git a/spec/fixtures/app/swiftshader/libGLESv2.dll b/spec/fixtures/app/swiftshader/libGLESv2.dll
new file mode 100644
index 00000000..e69de29b
diff --git a/spec/fixtures/app/vk_swiftshader.dll b/spec/fixtures/app/vk_swiftshader.dll
new file mode 100644
index 00000000..e69de29b
diff --git a/spec/fixtures/app/vk_swiftshader_icd.json b/spec/fixtures/app/vk_swiftshader_icd.json
new file mode 100644
index 00000000..e69de29b
diff --git a/spec/installer-spec.ts b/spec/installer-spec.ts
index ec931418..2879c697 100644
--- a/spec/installer-spec.ts
+++ b/spec/installer-spec.ts
@@ -3,33 +3,39 @@ import path from 'path';
 import { createTempDir } from '../src/temp-utils';
 import fs from 'fs-extra';
 import { createWindowsInstaller } from '../src';
+import spawn from '../src/spawn-promise';
 
 const log = require('debug')('electron-windows-installer:spec');
 
-const appDirectory = path.join(__dirname, 'fixtures/app');
+const fixtureAppDirectory = path.join(__dirname, 'fixtures/app');
 
-test.beforeEach(async (): Promise<void> => {
-  const updateExePath = path.join(appDirectory, 'Squirrel.exe');
+function spawn7z(args: string[]): Promise<string> {
+  const sevenZipPath = path.join(__dirname, '..', 'vendor', '7z.exe');
+  const wineExe = process.arch === 'x64' ? 'wine64' : 'wine';
+  return process.platform !== 'win32'
+    ? spawn(wineExe, [sevenZipPath, ...args])
+    : spawn(sevenZipPath, args);
+}
 
-  if (await fs.pathExists(updateExePath)) {
-    await fs.unlink(updateExePath);
-  }
-});
+async function createTempAppDirectory(): Promise<string> {
+  const appDirectory = await createTempDir('electron-winstaller-ad-');
+  await fs.copy(fixtureAppDirectory, appDirectory);
+  return appDirectory;
+}
 
 test('creates a nuget package and installer', async (t): Promise<void> => {
   const outputDirectory = await createTempDir('ei-');
-
-  const options = {
-    appDirectory: appDirectory,
-    outputDirectory: outputDirectory
-  };
+  const appDirectory = await createTempAppDirectory();
+  const options = { appDirectory, outputDirectory };
 
   await createWindowsInstaller(options);
 
   log(`Verifying assertions on ${outputDirectory}`);
   log(JSON.stringify(await fs.readdir(outputDirectory)));
 
-  t.true(await fs.pathExists(path.join(outputDirectory, 'myapp-1.0.0-full.nupkg')));
+  const nupkgPath = path.join(outputDirectory, 'myapp-1.0.0-full.nupkg');
+
+  t.true(await fs.pathExists(nupkgPath));
   t.true(await fs.pathExists(path.join(outputDirectory, 'MyAppSetup.exe')));
 
   if (process.platform === 'win32') {
@@ -38,4 +44,33 @@ test('creates a nuget package and installer', async (t): Promise<void> => {
 
   log('Verifying Update.exe');
   t.true(await fs.pathExists(path.join(appDirectory, 'Squirrel.exe')));
+
+  log('Verifying contents of .nupkg');
+
+  const packageContents = await spawn7z(['l', nupkgPath]);
+
+  t.true(packageContents.includes('lib\\net45\\vk_swiftshader_icd.json'));
+  t.true(packageContents.includes('lib\\net45\\swiftshader\\libEGL.dll'));
+});
+
+test('creates an installer when swiftshader files are missing', async (t): Promise<void> => {
+  const appDirectory = await createTempAppDirectory();
+  const outputDirectory = await createTempDir('electron-winstaller-test-');
+  const options = { appDirectory, outputDirectory };
+
+  // Remove swiftshader folder and swiftshader json file, simulating Electron < 10.0
+  await fs.remove(path.join(appDirectory, 'swiftshader', 'libEGL.dll'));
+  await fs.remove(path.join(appDirectory, 'swiftshader', 'libGLESv2.dll'));
+  await fs.rmdir(path.join(appDirectory, 'swiftshader'));
+  await fs.remove(path.join(appDirectory, 'vk_swiftshader_icd.json'));
+
+  await createWindowsInstaller(options);
+
+  const nupkgPath = path.join(outputDirectory, 'myapp-1.0.0-full.nupkg');
+
+  log('Verifying contents of .nupkg');
+
+  const packageContents = await spawn7z(['l', nupkgPath]);
+  t.false(packageContents.includes('vk_swiftshader_icd.json'));
+  t.false(packageContents.includes('swiftshader\\'));
 });
diff --git a/src/index.ts b/src/index.ts
index 56a59c47..64932f54 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -103,10 +103,23 @@ export async function createWindowsInstaller(options: Options): Promise<void> {
   metadata.version = convertVersion(metadata.version as string);
   metadata.copyright = metadata.copyright ||
     `Copyright © ${new Date().getFullYear()} ${metadata.authors || metadata.owners}`;
+  metadata.additionalFiles = metadata.additionalFiles || [];
+
+  if (await fs.pathExists(path.join(appDirectory, 'swiftshader'))) {
+    metadata.additionalFiles.push({ src: 'swiftshader\\**', target: 'lib\\net45\\swiftshader' });
+  }
+
+  if (await fs.pathExists(path.join(appDirectory, 'vk_swiftshader_icd.json'))) {
+    metadata.additionalFiles.push({ src: 'vk_swiftshader_icd.json', target: 'lib\\net45' });
+  }
 
   let templateData = await fs.readFile(path.join(__dirname, '..', 'template.nuspectemplate'), 'utf8');
   if (path.sep === '/') {
     templateData = templateData.replace(/\\/g, '/');
+    for (const f of metadata.additionalFiles) {
+      f.src = f.src.replace(/\\/g, '/');
+      f.target = f.target.replace(/\\/g, '/');
+    }
   }
   const nuspecContent = template(templateData)(metadata);
 
diff --git a/src/options.ts b/src/options.ts
index e5e3bd3f..8cde35d2 100644
--- a/src/options.ts
+++ b/src/options.ts
@@ -133,6 +133,11 @@ export interface PersonMetadata {
   url?: string;
 }
 
+export interface AdditionalFile {
+  src: string;
+  target: string;
+}
+
 export interface Metadata {
   name?: string;
   productName?: string;
@@ -143,4 +148,5 @@ export interface Metadata {
   owners?: string | PersonMetadata[];
   description?: string;
   iconUrl?: string;
+  additionalFiles?: AdditionalFile[];
 }
diff --git a/template.nuspectemplate b/template.nuspectemplate
index 7cf5bbdc..6817fd45 100644
--- a/template.nuspectemplate
+++ b/template.nuspectemplate
@@ -23,5 +23,8 @@
     <file src="Squirrel.exe" target="lib\net45\squirrel.exe" />
     <file src="LICENSE" target="lib\net45\LICENSE" />
     <file src="<%- exe %>" target="lib\net45\<%- exe %>" />
+    <% additionalFiles.forEach(function(f) { %>
+    <file src="<%- f.src %>" target="<%- f.target %>" />
+    <% }); %>
   </files>
 </package>