diff --git a/package.json b/package.json
index 57a90c9..b072faa 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "private": true,
   "name": "@okta/oidc-middleware",
-  "version": "5.2.0",
+  "version": "5.2.1",
   "description": "OpenId Connect middleware for authorization code flows",
   "repository": "https://github.com/okta/okta-oidc-middleware",
   "homepage": "https://github.com/okta/okta-oidc-middleware#readme",
diff --git a/scripts/build.js b/scripts/build.js
index 1a8179d..eede084 100644
--- a/scripts/build.js
+++ b/scripts/build.js
@@ -20,7 +20,7 @@ if (shell.exec(BANNER_CMD).code !== 0) {
   shell.exit(1);
 };
 
-shell.cp(`-Rf`, [`src`, `index.js`, `package.json`, `LICENSE`, `*.md`], `${NPM_DIR}`);
+shell.cp(`-Rf`, [`src`, `types`, `index.js`, `package.json`, `LICENSE`, `*.md`], `${NPM_DIR}`);
 
 shell.echo(`Modifying final package.json`);
 const packageJSON = JSON.parse(fs.readFileSync(`./${NPM_DIR}/package.json`));