diff --git a/.travis.yml b/.travis.yml
index 2613de27e6..2b91593db7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,8 +12,7 @@ before_script:
 - npm install -g bower gulp-cli@1
 - bower install
 - gulp lint-eslint
-- gulp generate-externs
-- gulp generate-typescript
+- gulp update-types
 - git diff --exit-code
 script:
 - xvfb-run wct -l chrome
diff --git a/gulpfile.js b/gulpfile.js
index 44a81fcc8a..614b9071bf 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -260,6 +260,10 @@ gulp.task('lint', (done) => {
   runseq('lint-eslint', 'lint-closure', done);
 });
 
+gulp.task('update-types', (done) => {
+  runseq('generate-externs', 'generate-typescript', done);
+});
+
 gulp.task('generate-externs', ['clean'], async () => {
   let genClosure = require('@polymer/gen-closure-declarations').generateDeclarations;
   const declarations = await genClosure();
diff --git a/package.json b/package.json
index a1a6673d43..028fd45e4d 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,8 @@
     "build": "gulp",
     "test": "npm run lint && wct",
     "lint": "gulp lint",
-    "version": "gulp update-version && git add lib/utils/boot.html"
+    "version": "gulp update-version && git add lib/utils/boot.html",
+    "update-types": "gulp update-types"
   },
   "repository": {
     "type": "git",