diff --git a/requirements.txt b/requirements.txt
index 9244208..dc63aab 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 invoke==1.7.1
 ipywidgets==7.7.0
-voila==0.3.5
+voila==0.4.0
 widget-periodictable==3.0.0