diff --git a/gulpfile.js b/gulpfile.js
index 8b584672f2..431ad920c8 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -277,7 +277,7 @@ gulp.task('lint', gulp.series('lint-eslint'));
 gulp.task('generate-types', gulp.series('generate-typescript'));
 
 gulp.task('update-version', () => {
-  return gulp.src('lib/utils/boot.js')
-  .pipe(replace(/(window.Polymer.version = )'\d+\.\d+\.\d+'/, `$1'${require('./package.json').version}'`))
-  .pipe(gulp.dest('lib/utils'));
+  return gulp.src('polymer-element.js')
+  .pipe(replace(/(export const version = )'\d+\.\d+\.\d+'/, `$1'${require('./package.json').version}'`))
+  .pipe(gulp.dest('.'));
 });
diff --git a/polymer-element.js b/polymer-element.js
index 7188e01b73..8cb6e5ccd2 100644
--- a/polymer-element.js
+++ b/polymer-element.js
@@ -28,3 +28,8 @@ export { html } from './lib/utils/html-tag.js';
  */
 export const PolymerElement = ElementMixin(HTMLElement);
 
+/**
+ * Current Polymer version in Semver notation.
+ * @type {String} Semver notation of the current version of Polymer.
+ */
+export const version = '3.0.5';