diff --git a/lib/install/rollup/install.rb b/lib/install/rollup/install.rb
index c426b84..cbf2ffb 100644
--- a/lib/install/rollup/install.rb
+++ b/lib/install/rollup/install.rb
@@ -3,7 +3,7 @@
 run "yarn add rollup @rollup/plugin-node-resolve"
 
 say "Add build script"
-build_script = "rollup -c rollup.config.js"
+build_script = "rollup -c --bundleConfigAsCjs rollup.config.js"
 
 if (`npx -v`.to_f < 7.1 rescue "Missing")
   say %(Add "scripts": { "build": "#{build_script}" } to your package.json), :green
diff --git a/lib/jsbundling/version.rb b/lib/jsbundling/version.rb
index 8f183f0..c9bbe83 100644
--- a/lib/jsbundling/version.rb
+++ b/lib/jsbundling/version.rb
@@ -1,3 +1,3 @@
 module Jsbundling
-  VERSION = "1.0.3"
+  VERSION = "1.0.4"
 end