diff --git a/pygal/graph/public.py b/pygal/graph/public.py
index ba6332d..b6eceda 100644
--- a/pygal/graph/public.py
+++ b/pygal/graph/public.py
@@ -157,6 +157,7 @@ class PublicApi(BaseGraph):
             max_scale=2,
             explicit_size=True,
             no_data_text='',
+            js=(),
             classes=(_ellipsis, 'pygal-sparkline')
         )
         spark_options.update(kwargs)