diff --git a/setup/unix-ci.py b/setup/unix-ci.py
index 97be4f3926..4c7d09f8da 100644
--- a/setup/unix-ci.py
+++ b/setup/unix-ci.py
@@ -100,7 +100,7 @@ def main():
             'https://download.calibre-ebook.com/travis/{}.tar.xz'.format(tball), SW
         )
 
-        run('npm install --no-optional rapydscript-ng')
+        run('npm install --no-optional rapydscript-ng uglify-js regenerator')
         print(os.environ['PATH'])
         run('which rapydscript')
         run('rapydscript --version')