diff --git a/scripts/rollup-build.js b/scripts/rollup-build.js
index <HASH>..<HASH> 100644
--- a/scripts/rollup-build.js
+++ b/scripts/rollup-build.js
@@ -3,6 +3,7 @@ import nodeResolve from 'rollup-plugin-node-resolve';
 import babel from 'rollup-plugin-babel';
 import uglify from 'rollup-plugin-uglify';
 import commonjs from 'rollup-plugin-commonjs';
+import filesize from 'rollup-plugin-filesize';
 
 export default {
   input: 'src/index.js',
@@ -17,6 +18,7 @@ export default {
       plugins: ['external-helpers'],
     }),
     uglify(),
+    filesize(),
   ],
   output: [
     {
chore: use filesize rollup plugin during in build script