diff --git a/packages/material-ui-icons/scripts/copy-files.js b/packages/material-ui-icons/scripts/copy-files.js
index 38cc6d631c2056..591e6b3f33dcfb 100644
--- a/packages/material-ui-icons/scripts/copy-files.js
+++ b/packages/material-ui-icons/scripts/copy-files.js
@@ -2,6 +2,7 @@
 
 import path from 'path';
 import fse from 'fs-extra';
+import glob from 'glob';
 
 async function copyFile(file) {
   const buildPath = path.resolve(__dirname, '../build/', path.basename(file));
@@ -27,6 +28,12 @@ async function createPackageFile() {
   return newPackageData;
 }
 
+function typescriptCopy(from, to) {
+  const files = glob.sync('**/*.d.ts', { cwd: from });
+  const cmds = files.map(file => fse.copy(path.resolve(from, file), path.resolve(to, file)));
+  return Promise.all(cmds);
+}
+
 async function prepend(file, string) {
   const data = await fse.readFile(file, 'utf8');
   await fse.writeFile(file, string + data, 'utf8');
@@ -50,6 +57,13 @@ async function run() {
   await ['README.md', '../../LICENSE'].map(file => copyFile(file));
   const packageData = await createPackageFile();
   await addLicense(packageData);
+
+  // TypeScript
+  const from = path.resolve(__dirname, '../src');
+  await Promise.all([
+    typescriptCopy(from, path.resolve(__dirname, '../build')),
+    typescriptCopy(from, path.resolve(__dirname, '../build/es')),
+  ]);
 }
 
 run();