diff --git a/djblets/pipeline/settings.py b/djblets/pipeline/settings.py
index 7281d43bd1d471d6c9df77c130aa16af1a3f114f..cc0e7feeb3307c701b699220d4e10144b6dd5101 100644
--- a/djblets/pipeline/settings.py
+++ b/djblets/pipeline/settings.py
@@ -188,6 +188,7 @@ def build_pipeline_settings(
             '-s', 'true',
         ] + babel_extra_args,
         'UGLIFYJS_BINARY': uglifyjs_bin_path,
+        'UGLIFYJS_ARGUMENTS': '--compress --mangle',
     }
 
     if use_lessc: